Trimax Universal Hockey Puck Internal Shackle Door Lock Re Keyable Single Pack. There is no exposed shackle to cut or saw. The enlarged opening covers and secures all trailer hasps Ideal for gates trucks and heavy duty security hasps. It is easy to use and weather resistant. Features solid steel construction and a thicker body with a 3/8" diameter internal shackle. Available in single packs or keyed-alike two and three packs. Features of Trimax Hockey-Puck Shackle Trailer Door Lock: Universal fit with enlarged lock opening 3/8" diameter internal shackle Weather resistant with no springs to rust or jam One solid piece of steel All 3 keyed alike for added convenience Package Contents: Trimax Hockey-Puck Shackle Trailer Door Lock Trimax THPXL: Universal Hockey Puck Internal Shackle Door Lock Re Keyable Single Pack