Connection chain with IvyTex textile sleeve to protect against damage to paintwork Plugs into ABUS frame locks and Alarmbox 2.0 8mm square profile chain links made out of hardened steel alloy Hydrophobic IvyTex cover repels dirt and moisture Various options for connecting to fixed objects or linking multiple bicycles TECH SPECS Primary Color Grey Internal Lock Size Imperial 3.3 Internal Lock Size Metric 100cm Thickness In mm 8mm