The Performance W30935 7-Piece Socket Adapter and U-Joint Set is constructed of heavy-duty chrome vanadium steel for superior strength and durability. Features: * U-joint sizes: 1/4-inch, 3/8-inch and 1/2-inch * Adapter sizes: 1/2-inch to 3/8-inch, 3/8-inch to 1/2-inch, 3/8-inch to 1/4-inch, and 1/4-inch to 3/8-inch * Heavy-duty chrome vanadium steel * Fully polished chome-plated finish What"s In The Box: * 1/4-inch U-Joint * 3/8-inch U-Joint * 1/2-inch U-Joint * 1/2-inch to 3/8-inch adapter * 3/8-inch to 1/2-inch adapter * 3/8-inch to 1/4-inch adapter * 1/4-inch to 3/8-inch adapter