Round Top Pin when installed with the Round Top Driver, is one of the most advanced products in the industry. It's the only product of its kind for securing erosion control matting, geotextile fabric, mulch netting and sod. The pin is manufactured from an 11 gauge high-strength steel wire. It measures 6 inches in length and has a 1 3/8" diameter head on top. This Round-Top head is desighned to hold 5 times the surface area of a typical U-shaped staple. Simply put, more surface area means more holding power.