Luma Solido Motorcycle Disc Lock Ref: LMSD12 Luma Solido Disc Lock Ride Magazine Recommended. Sold Secure Gold approved. 10 disc double locking system. Reversible key. Anti-drill. Anti-pick. Anti-humdity cover. Armoured hardened 3mm thick steel case protects shackle and locking system. 12mm diameter shackle. Protective case included with disk lock.