Cup-dish head. Designed to countersink into the face of the drywall. Smooth shank. Diamond point. For securing drywall to studs. 12-1/2-gauge. 19/64in head. No. 750182: Length: 1-3/8in, Diameter: 12-1/2 ga, Pkg Size: 1 lb, Head Diameter: 19/64in, Shank Type: Smooth, Head Type: Cupped Dish, Pkg Qty: 320 No. 749863: Length: 1-3/8in, Diameter: 12-1/2 ga, Pkg Size: 5 lb, Head Diameter: 19/64in, Shank Type: Smooth, Head Type: Cupped Dish, Pkg Qty: 1600 No. 750173: Length: 1-5/8in, Diameter: 12-1/2 ga, Pkg Size: 1 lb, Head Diameter: 19/64in, Shank Type: Smooth, Head Type: Cupped Dish, Pkg Qty: 270 No. 749854: Length: 1-5/8in, Diameter: 12-1/2 ga, Pkg Size: 5 lb, Head Diameter: 19/64in, Shank Type: Smooth, Head Type: Cupped Dish, Pkg Qty: 1350