Ideal applications include asphalt and fiberglass shingles, waterproof tar paper, metal drip paper, insulative sheathing, and siding. Full round head. 11-gauge. Smooth shank. Galvanized. For use in Senco model No. SCN40R and No. 455XP, Bostich model No. N12B, Porter Cable model No. RN175, Makita model No. AN451, and Paslode model No. 3175R. 7200 per box. No. HJ13ATAP: 1" No. M003104: 1-1/4" No. M003105: 1-1/2"