Adjustable Shackle: No | Brand Name: Master Lock | Color: Silver | Height: 1-5/16 in. | Keyed Alike: No | Length: 1 1/2 in. | Lock Material: Hardened Steel | Locking Mechanism: Double Locking | Number in Package: 1 pk | Packaging Type: Clamshell | Rekeyable: No | Resettable or Customized Combinations: No | Shackle Clearance: 7/16 in. | Shackle Diameter: 1/2 in. | TSA Approved: No | Width: 15/16 in. The Master Lock No. 37D laminated padlock features a 1-9/16 inch (40 mm) wide laminated steel body for maximum strength and reliability. The armored hardened steel shackle is 15/16 inch (24 mm) long and includes a shackle guard to protect against bolt cutters and hacksaws. The 4-pin cylinder prevents picking and the dual locking levers provide resistance against prying and hammering. | For guarding trailers on or off vehicles | Shackle sleeve removable to accommodate openings 9/32" in diameter | Also for use with security cables, chains, and hasps | Exclusive shackle guard, extra resistant to bolt cutters and hacksaws | Precision 4-pin tumbler mechanism | Patented dual steel locking levers independently lock both shackle legs | Rust resistant finish | Fits openings 1/2" or larger in diameter | Includes pair of brass keys | Keyed differently