Laminated case.4-pin cylinder helps prevent picking. Dual ball bearing locking for maximum pry resistance. Hardened steel shackle for extra cut resistance. 2 brass keys. Only SKUs with KA in the model number are keyed alike padlocks and all items ordered from that SKU number would be keyed alike to the 4-digit key number shown in the product description. Type: Keyed Different \nWidth: 1-3/4 In. \nMaterial: Steel \nShackle Diameter: 5/16 In. \nShackle Vertical Clearance: 15/16 In. \nShackle Horizontal Clearance: 3/4 In. \nLocking Mechanism: 4-Pin Cylinder \n