Glass tube key used as an alternative key for the digital ignition lock MOTOGADGET M-Lock with RFID technology (art. no. 204778). Dimensions: 3 x 13 mm Please note the significantly shorter operating range compared to drop keys (5-10 mm). In addition, the operating range is subject to wider tolerances. A maximum of 3 keys can be associated with the M-Lock block at the same time. The "master key" associated with m-Lock is required for teaching additional keys.