Ramset Drive Pins are designed for fastening applications in concrete and steel. They are specifically fabricated for toughness and durability and are able to penetrate dense concrete and structural quality steel. Ramset assures consistent, optimum quality in every fastener. Designed for use in concrete and structural steel applicationsUse with Ramset powder actuated tools for fastening applications in concrete and steelFor attaching 1/4 inch and 1/2 inch plywood to concreteTough, durable pins are able to penetrate dense concrete and structural-quality steelWasher increases bearing surface against material to be fastened