There is a superior CH-70 hydraulic hole puncher. It is used to punch metal plates, such as copper, aluminum, iron, and steel, perfect for L and H style flat copper, busbarthe in the electricity industry, construction, etc. A great punching force of 35T/350KN allows you to get easy work done. It is durable and solid with high hardness and strength.
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There is a superior CH-70 hydraulic hole puncher. It is used to punch metal plates, such as copper, aluminum, iron, and steel, perfect for L and H style flat copper, busbarthe in the electricity industry, construction, etc. A great punching force of 35T/350KN allows you to get easy work done. It is durable and solid with high hardness and strength.

Legendary Bostitch B8 PowerCrown staples are crafted for ultimate drive performance. Taking the physical dynamics of staple driving into consideration led our engineers to develop the unique PowerCrown feature. As this crowned (peaked) staple top is flattened during the staple drive, it forces the staple legs outward so they are more fully supported by the stapler magazine throughout the drive. This delivers more stapling force and reduced buckling for maximum penetration. Each full strip contains 210 staples and is constructed from superior quality high carbon wire to reduce buckling and jamming. The finely honed chisel points deliver maximum penetration for maximum sheet capacity. ¼" leg length. 5,000 staple quantity per box.

Premium staples ensure jam-free stapling when use with Swingline® Optima® staplers. The specially engineered staples also deliver excellent stapling performance when used with any standard desktop, grip and electric staplers. They feature chisel points to prevent jams and come in a durable metal tin. 1/4" leg length. 210 staples per strip, 3,750 per box.

Fasten up to 85 sheets of paper securely with these heavy-duty 0.5-inch premium staples. The honed chisel-point design helps each staple pierce thick stacks of paper, while the robust, steel construction delivers the strength needed for reliable holding power. These Bostitch heavy-duty premium staples boast high carbon content to help prevent jamming and buckling, and there are 1,000 units in each pack for simple stocking.