C.E. Smith Stake Pocket - The easiest and most secure way to add removeable sides to a trailer. Sized to receive standard 2in x 4in studs. Features: Bolts onto trailer. 11 gauge. Hot dipped galvanized. 3/8in holes for bolting to frame. Center hole for an optional locking bolt Dimensions: 2-1/2in x 1-1/2in x 3-1/2in