The laminated padlocks Master Lock Excell® No. M1BEURT feature a 45 mm wide laminated steel body for increased strength and reliability, along with a weather-resistant casing made of brass and zinc. The octagonal shackle has a diameter of 8 mm, is 24 mm long, and is made from Tough-Cut™ boron carbide, which is 50% harder than hardened steel and provides maximum resistance to cutting and sawing. The 4-pin locking cylinder prevents the lock from being picked, while the two ball bearing locking mechanisms protect against forced entry or smashing. The limited lifetime warranty gives you the assurance of a brand you can trust.