The ITW Red Head 50118 1/2-inch x 4-inch Sleeve Anchor - SIngle Count is a sleeve type anchor that uses a split expansion sleeve over a threaded stud bolt body with integral expander. Made of zinc plated carbon steel and 304 stainless, the ITW Red Head 50118 will provide a full 360 degrees of hole contact. Features: * Dynabolt can be installed through object to be fastened * Preassembled for faster, easier installations * Sleeve design improves holding power * Anchor diameter equals hole diameter * No pre-spotting of holes necessary * Heavy-loading capacity What"s In The Box: * ITW Red Head 50118 1/2-inch x 4-inch Sleeve Anchor - SIngle Count