The Master Lock No. 443 Laminated Steel padlock – multiple locks open with the same key – features a 1-9/16in (40mm) wide laminated steel body for superior strength and a 5/8in (16mm) tall, 3/8in (10mm) diameter removable hardened steel post for excellent cut resistance. Ideal for special applications such as vending & meters, this commercial grade padlock offers superior protection from drilling and prying and a non-rekeyable, 4-pin W1 cylinder helps prevent picking.