Double the security: The hardened steel frame lock chain is a secure and practical addition to your ABUS frame lock. No additional keys are required. 6 & 8mm thick square chain with textile tube to protect against paint damage Chain made from specially hardened steel Double security against bicycle theft Various connection options Contents 1x Abus Chain ACH 2.0 6KS frame lock chain Brand Abus Material Steel Weight 2.51 lbs