The Kryptonite KryptoFlex 2010 20mm hardened steel link lock offers truly high protection. 20mm hardened steel links with high resistance to lock cut.4-digit resettable numeric code. Protective vinyl coating. Includes 2 double-sided keys. Key Safe program - if keys are lost, send 1st pair of standard replacement keys free of charge. (registration required) Dimensions: 20mm rope diameter, 100cm length