Non-rekeyable?? 4-pin cylinder helps prevent picking</br>Armored hardened steel shackle defies cutting</br>1-9/16-inch shrouded laminated steel body for superior strength</br>Shackle fits openings 1/2-inch in diameter or larger?? the shackle guard is removable to accomidate openings 9/32-inch in diameter</br>Dual locking levers provide extra pry resistance</br></br>Product Description</br></br>The Master Lock 37KA laminated steel padlock?? keyed alike?? multiple locks open with the same key. Features a 1-9/16 inch (40mm) wide shrouded laminated steel body for extra strength and a shackle guard to protect against bolt cutters and hacksaws. The shackle fits openings of 1/2 inch (13mm) diameter or larger and the shackle guard can be removed to accommodate openings of 9/32 inch (7mm) in diameter. Dual locking levers provide extra pry resistance and the rekeyable?? 5-pin W27 cylinder helps prevent picking.</br><br/>http://www.amazon.com/gp/product/B001QK1X5O