Tuffy's exclusive Pry-Guard locking system, which incorporates a high quality tubular keyed lock. A continuous steel hinge attaches the heavy gauge, reinforced Tuffy box lids to the welded 16 gauge steel lockboxes. The lids incorporate a neoprene seal that helps to protect the lockboxes contents. A sharp looking, extremely durable, textured powder coat finish protects the lockboxes exterior. Mounting is easy, the lockboxes are fastened using the Grade 8 mounting hardware provided.