The Oxford Monster Ultra Strong Padlock Has Hardened Boron Steel Armour Casing, 11mm Hardened Steel Shackle And Comes With Three Keys.key Replacement Service Available. Simply Keep The Key Number In A Safe Place Then If You Are Unfortunate Enough To Lose All Your Keys, A Spare Can Be Made Up For You.key Features• Ultra-strong Padlock Made From Hardened Boron Steel Armour Casing.• Double Locking Mechanism.• Comes With Sliding Key Dust Cover.• Three Keys And Key Replacement Service.• Sold Secure Powered Cycle (motorcycle) Gold