2-1/2" fastening pin. 100 per box. Ramguard pins meets ACQ codes. 300 head diameter drive pin. Designed for use in concrete and structural steel applications. ITW Ramset powder actuated fasteners are specifically fabricated to meet the exacting requirements of toughness and durability. Shank Length: 2-1/2", Head Diameter: 0.300", For Use In: SA270, Cobra, M70, RS22, HD22, Pkg Qty: 100 No. 09170: Shank Length: 3", Head Diameter: 0.300", For Use In: SA270, Cobra, M70, Pkg Qty: 100