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WORX - Nitro 20V 13'' Cordless Straight Shaft Grass Trimmer (1 x 4.0 Ah Battery & 1 x Charger) - Black

Model: WG173
SKU: 6569567
Sold byBest Buy

About this product

The Worx Nitro 20V 13” Cordless String Trimmer delivers pro-grade performance to support a variety of grass trimming tasks—such as cleaning up sidewalk, driveway, and retaining wall areas. And with the ability to switch between trimmer, edger, and mini-mower modes, you can get more done in the yard with a single tool. The high-efficiency brushless motor runs 50% longer, is 25% more powerful, and delivers a 10X longer life than trimmers with a standard brush motor. With this added power, the 13” dual-exit cutting head makes trimming effortless—even in dense, overgrown areas. Extend trimming line with ease and efficiency using the intuitive push-button command feed system. While this cordless string trimmer remains comfortably lightweight, it is packed with flexible features that enhance control and reduce user fatigue. For example, the telescoping rotating shaft adjusts to fit the height and positioning of the user, while the adjustable auxiliary handle makes for more flexible operability. As part of the Power Share platform, it uses the same batteries as every other tool, outdoor power and lifestyle product in that family. When you’re working on hills or around hard-to-reach areas, the 90° pivoting head adapts to maintain precision cuts. The trimmer also comes equipped with durable edging wheels that maximize maneuverability and enable clear, crisp lines along grassy edges.

Features

  • The Power To Outperform

    Worx NITRO tools are engineered to provide greater power, performance, and run time

  • High-Efficiency Brushless Motor

    Runs 50% longer, is 25% more powerful, and has a 10X longer life than tools with brushed motors

  • 13” Dual-Exit Cutting Head

    Supports powerful pro-grade trimming to efficiently cut dense grass along sidewalks, driveways, retaining walls, and more

  • Same Battery, Expandable Power

    The same battery powers over 75+ 20V, 40V, and 80V lifestyle, garden, and power tools in the Power Share family.

  • Push-Button Command Feed

    Easily and efficiently extends trimmer line on demand

  • 3-In-1 Functionality

    Converts between trimming, edging, and mini-mower modes in seconds

  • Edging Wheels

    Offer added control and support for clean, crisp edges

  • 90° Pivoting Head

    Adjusts to accommodate sloped and hard-to-reach areas

  • Telescopic Rotating Shaft

    Adapts to fit user’s height and positioning

  • Includes

    20V 13” Cordless String Trimmer, 1) 20V 4.0Ah Power Share PRO batteries, 1) 4A dual-port quick charger

Specifications

  • Color
    Black
    Power Source
    Battery-powered
    Battery Amperage
    5.5 ampere hours
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Reviews

Rating 4.6 out of 5 stars with 11 reviews

5 star rating. 7 reviews4 star rating. 4 reviews
100% would recommend to a friend

Top Mentions

  • Battery Life (6)
  • Ease of use (5)
  • Adjustability (3)
  • Power (3)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 4 out of 5 stars

    Senior Female operator.

    I did my reserch on buying a this being a female of 68 years I needed to find one that was easy to use but still would do the job because I am going to use it instead of buying a new lawn mower. It did the job great and it was really fun. I had only 2 problem. First the metal extension was missing that you can use to keep a safe distance from my garden flowers. And second the way the wording was on the internet site where I ordered it was misleading because on the picture it says that you were going to receive 2 batteries and I was very disappointed to get only one. Best Buy Customer person was of no help on the phone. Otherwise I would totally give it a thumbs up!

    Posted by JanetG

  • Rated 5 out of 5 stars

    Great String Trimmer

    This Worx trimmer, is lightweight and powerful. The multiple adjustments allow for comfort of use. The battery run time is excellent, and allowed me to trim and edge my yard without having to recharge. Good tool for the money.

    Posted by PapaSmurf

  • Rated 4 out of 5 stars

    Great Electric Trimmer

    I used this trimmer for personal use at my home for one season now. It is an upgrade from the 20V Worx trimmer I using before. First thing you'll notice is the smooth sound with the brushless trimmer head. Functionality - It is a straight shaft trimmer that can be adjusted to multiple heights. The head can be adjusted to multiple angles. I have had difficulty with finding one universal adjustment. I adjust the trimmer to complete yard edging. I believe there is an adjustment to accommodate all applications. In order to "run" your trimmer, first depress the safety button next to your thumb, then pull the trigger. Quality - It feels solid. With everything properly secured, there is no rattling. It feels like a grass trimmer in your hand. The 40V battery is really nice. The battery status button allows you to check your battery life. I get around 3 to 4 trimmings before I have to charge the battery. I spend around 10 to 20 minutes trimming shrubs and trees, wire fence, and edging each mowing.

    Posted by BlockParty

  • Rated 5 out of 5 stars

    Best weed eater I've used

    Lightweight, powerful, adjustable hight and battery lasts a very long time

    Posted by NANCYH

  • Rated 5 out of 5 stars

    Strong

    Its very versatile. The edger is strong, and the power starts quickly. The head tilting isn't smooth, its difficult to adjust.

    Posted by ejc81

  • Customer reviews from worx.com

    Syndicated rating, 4.28 out of 5 stars with 75 reviews on worx.com.

    See all worx.com reviews
    worx.com
  • Customer reviews from bestbuy-ca

    Syndicated rating, 5 out of 5 stars with 1 review on bestbuy-ca.

    See all bestbuy-ca reviews

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WORX - Nitro 20V 13'' Cordless Straight Shaft Grass Trimmer (1 x 4.0 Ah Battery & 1 x Charger) - Black
WORX - Nitro 20V 13'' Cordless Straight Shaft Grass Trimmer (1 x 4.0 Ah Battery & 1 x Charger) - Black
4.6(11)

The Worx Nitro 20V 13” Cordless String Trimmer delivers pro-grade performance to support a variety of grass trimming tasks—such as cleaning up sidewalk, driveway, and retaining wall areas. And with the ability to switch between trimmer, edger, and mini-mower modes, you can get more done in the yard with a single tool. The high-efficiency brushless motor runs 50% longer, is 25% more powerful, and delivers a 10X longer life than trimmers with a standard brush motor. With this added power, the 13” dual-exit cutting head makes trimming effortless—even in dense, overgrown areas. Extend trimming line with ease and efficiency using the intuitive push-button command feed system. While this cordless string trimmer remains comfortably lightweight, it is packed with flexible features that enhance control and reduce user fatigue. For example, the telescoping rotating shaft adjusts to fit the height and positioning of the user, while the adjustable auxiliary handle makes for more flexible operability. As part of the Power Share platform, it uses the same batteries as every other tool, outdoor power and lifestyle product in that family. When you’re working on hills or around hard-to-reach areas, the 90° pivoting head adapts to maintain precision cuts. The trimmer also comes equipped with durable edging wheels that maximize maneuverability and enable clear, crisp lines along grassy edges.

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Pros for WORX - Nitro 20V 13'' Cordless Straight Shaft Grass Trimmer (1 x 4.0 Ah Battery & 1 x Charger) - Black
Battery Life, Power, Ease of use, AdjustabilityWeight, Battery Life, Ease of Use, Overall PerformanceOverall Performance, Battery Life, Power, Weight, Ease of UseThere were no pros for this product—

Specs

Questions & Answers

  • does it come with trimmer line

    Hello there! Thank you for your inquiry. Yes, the WG173 trimmer does come with trimmer line included when you purchase the tool, so it is ready to use out of the box. The trimmer uses 0.065" diameter line, which is ideal for light to medium trimming tasks around the yard. When it’s time to replace the line, you can use replacement spools under part number WA0007, which are designed specifically for this model and will ensure proper feeding and performance. Thank you for choosing WORX!

    Answered by Worx Product Expert
    Worx Product Expert response
  • does it come with line?

    Hello there! Thank you for your inquiry. Yes, the WG173 trimmer does come with line when purchased new. It typically includes one pre-wound spool (WA0007) with a line diameter of 0.065 in., which is ready to use right out of the box. When that spool runs out, you can replace it with the same WA0007 replacement spool or reload it with the correct size trimmer line. Thank you for choosing WORX!

    Answered by Worx Product Expert
    Worx Product Expert response
  • Is it dual line

    Hello there! Thank you for your inquiry. Yes, the WORX WG173 uses a dual‑line setup. This model is designed to run with the WA0007 dual‑line replacement spool, which comes pre‑wound with two cutting lines for improved cutting efficiency and more even trimming. The dual‑line design helps the trimmer cut faster and cleaner compared to single‑line systems, especially when working through thicker grass. Thank you for choosing WORX!

    Answered by Worx Product Expert
    Worx Product Expert response
  • What size replacement string does this weed eater use if I just want to rethread the spool.

    Hello Dee! Thank you for your question. This trimmer will use line size 0.065" and each spool contains a total of 32 feet of DNA2 DoubleHelix line. Each section of the spool has 16 feet. Thank you for choosing Worx!

    Answered by Worx Product Expert
    Worx Product Expert response
  • What type of replacement string.

    Hello There! Thank you for your question. This trimmer will use spool model number WA0007! Each spool contains a total of 32 feet of DNA2 DoubleHelix line. Each section of the spool has 16 feet. Thank you for choosing Worx!

    Answered by Worx Product Expert
    Worx Product Expert response
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