51mm. Secure garage, gate and shed with one key! 3 Old English, keyed alike, galvanised padlocks, specifically designed for harsh environments. Galvanised lever padlock mechanism and weatherproof body. 4 keys. 4-lever. Ideally suited to outdoor applications. Specifications: Body W x H x Th: 51 x 61.4 x 16.5mm. Max. shackle W x H: 21.9 x 16mm. Shackle dia: 8mm. Weight: 0.512kg.