C-Series Padlocks Tough and robust the heavy duty C-series padlocks from UNION are built for durability and resistance to attack. 1K11 - BattleshipClose shackle tough padlock for use on security applications 1K21 - Cruiser Padlocks & keysClose shackle tough padlock for use in security applications 1K42 - AVA Brass Padlock10 disc AVA open shackle brass padlock providing a high l… 1K57 - HerculesRobust concealed shackle padlock Vertical sliding shackle… 7B018 - PadbarA high grade malleable cast iron padbar with a hardened s…