The ITW Red Head 35305 1/4-inch x 2-inch Anchor Hammer Set - 50-Pack is a one-piece zinc plated steel anchor that uses an expansion body and expander drive pin. The ITW Red Head 35305 anchors meet or exceed GSA specification A-A-1925A Type 1. The ITW Red Head 35305 can be used in electric boxes, conduit clips, drywall track and roof flashing. Features: * Install through material to be fastened * Not for use in overhead applications * Works in concrete, block and brick * Low profile mushroom head style * Fast and easy installation What"s In The Box: * ITW Red Head 35305 1/4-inch x 2-inch Anchor Hammer Set - 50-Pack