VEVOR - Linear Rail Guide Kit, HGR20, 2Pcs 2000 mm (78.74 inch) Linear Motion Rails and 4Pcs Bearing Slide Blocks - Silver

Includes 2 linear rails, 4 slide blocks, 68 end caps, and 4 rail clamps. Designed with precise mounting holes and hole spacing, our medium-carbon steel rails ensure reduced vibration and quiet linear motion. Every alloy steel slide block is built with ball bearings for jam-free travel.