Steelhead N17SS 7/16 in. x 1-1/2 in. 16 Gauge Stainless Steel N-Series Staples 10,000/box For Use with Shakes, Shingles, Fencing, Siding and Lattice Will fit most N-Wire staplers Will fit Senco SKS-N, SNS40, SNS45, SNS50, MI, MII tools AISI 304 Grade Stainless Steel 16 Gauge, Chisel Point