Master Lock 2" W. 4-Pin Tumbler Keyed Different Padlock features a durable 2-inch wide, 4-pin tumbler design that reliable security. Constructed with a tough, laminated steel case that is cadmium rustproofed, this padlock is built to withstand harsh conditions. The special alloy steel shackle has a diameter of 3/8" and is secured by dual steel locking levers that independently lock each shackle leg, providing enhanced protection against tampering. The shackle measures 15/16" horizontally and 1" vertically, making it versatile for various locking needs. This padlock includes two brass keys and a removable key-change number for additional security. Note that only SKUs with "KA" in the model number are keyed alike, meaning all items ordered under that SKU share the same 4-digit key number. Model Number: 5D