1,000 Count, 1" Caps & Staples, 5/16" Crown, 1" Leg Length, 18 Gauge Wire, Diamond Point, Smooth Shank, Wire Collation, Steel/Plastic Cap, Electro Galvanized, Suitable For Use With Bostitch #SB150SLBC, #SL1838BC Pneumatic Stapler, Eliminates Pull Through When Installing Felt, House Wrap & Foam Board Insulation.