Designed for professional use, this puck lock features a hardened steel shackle and a compact body that fits through standard hasps on trailers, gates and storage containers. Its simple, durable design makes rapid deployment on building sites while providing reliable physical protection against opportunistic theft. Ideal for builders, fleet operators and site managers securing equipment, access points and parked assets. Typically operated with a standard key, compatible with common security setups on building sites; use with appropriately sized hasps and keep keys secure.