The Monster XL chain lock features a powerful 14.5mm chain made from high quality Ni-Cro-Mo alloy steel. The chain has a protective cloth sleeve to help prevent damage and make it easier to handle.The ultra strong padlock has boron steel armour casing and features a double locking mechanism and a massive 16mm shackle. The padlock comes with three keys for which there is a key replacement service. When you buy your Monster XL simply note down the number which comes attached to the keys on a metal tag. Keep this in a safe place then in the event that you are unfortunate enough to lose all your keys it will be possible to get a new key made up for you.This chain lock has undergone rigorously independent testing and has Sold Secure Motorcycle Gold and ART 4154 approval.Features: 5 minute attack tested: Saw drill sledge hammer & bolt cropper resistant Freeze Tested Double Locking mechanism Sold Secure Motorcycle Gold & ART 4154 approval Replacement key service Available in 1.2M 1.5M & 2.0MChain 14.5mm Hex chain made from Ni-Cro-Mo alloy steel 1.2M 1.5M & 2.0M Lengths available Cloth covered chain can be easily stowed under the seat Padlock Ultra-strong padlock with hardened boron steel armour casing Double locking mechanism 16mm Shackle Comes with three keys This product has met the high demands of the Police Preferred Specification and has been accredited “Secured by Design(SBD)SBD is a police initiative which seeks to achieve sustainable reductions in property theft. By encouraging good design and practice SBD aims to reduce the demand on police forces and help us all live in a safer society. To see the full list of our SBD approved productsclick here