These high carbon steel service entrance staples offer excellent durability for years to come. A diamond shaped head surface and offset legs with sharp points make it easy to hammer straight into wood to secure the cable while preventing cracks and splitting. Staple is 1-5/8 in wide and 2-1/8 in high and secures 4/0 SE, large BX, non-metallic (NM) and Greenfield cables. Staples are 100% recyclable and made in the USA.