225 Pack, 1/4" x 1-1/4", Tapcon Hex Washer Head Concrete Anchor, Designed For Fastening Applications In Concrete, Block & Brick, Approved For Treated Lumber, Use To Attached Electrical Equipment, Downspout Straps, Hose Reels, Flagpoles & Hurricane Shutters, Indoor & Outdoor Applications, Building Code Approved.