10mm chain with discus style padlock. Sold secure "Bicycle Gold" approved. Sold secure "Motor Scooter Silver" approved. Nylon protective sleeve with attractive red plastic end cuffs. Master Lock Excell M50D padock with zinc plated finish and 12mm patented octagonal "Boron-Carbide" shackle. This shackle is 50% harder than hardened steel. Anti-drill plate. Keyway dust cover for superior weather protection. Key retaining safeguard insures padlock is not left unlocked. Supplied with four keys.