60mm titanium alloy body with 11mm diameter hardened steel double-bolted, non-key retaining shackle. Corrosion-resistant nano-plating on shackle. Protection against attack is provided by shackle guard. Features 10-pin tumbler locking mechanism. High-precision reversible keyway with 150,000 differs. Suitable for indoor and outdoor use. 2 keys supplied. 10-Pin Tumbler Locking Mechanism Titalium Body Round Hardened Steel Shackle Suitable for Indoor & Outdoor Use Reversible Dimple Key 10-Pin Tumbler Locking Mechanism Titalium Body Round Hardened Steel Shackle Suitable for Indoor & Outdoor Use Reversible Dimple Key