Blockstory Chain Lock 1.2m Heavy Duty

The Blockstory Chain Lock 1.2m Heavy Duty is a motorcycle and bicycle security chain designed for high-risk outdoor parking environments where padlock-only security is insufficient. The 14mm hardened manganese steel links resist angle grinder attacks for significantly longer than standard case-hardened chain links that cheaper chain locks use. The 1.2-meter length allows the chain to pass through a wheel, frame, and a fixed anchor point simultaneously — the minimum security standard for motorcycle and bicycle parking. Each link is individually heat-treated and then cross-linked in an alternating orientation that prevents the chain from being straightened under leverage, a technique used to defeat aligned-link chains with a twist attack. The integrated 70mm Blockstory padlock uses a 6-pin cylinder and a 13mm shackle specifically dimensioned to close the chain loop without leaving an exposed shackle gap for bolt-cutter access. A protective nylon sleeve covers the chain along its full length, protecting vehicle paintwork during wrapping. Dimensions: 1200mm length, 14mm link diameter. Weight: 2.8 kg.