25 mm,steel,blackProduct descriptionSecurity lock ARTAGO Practic Cap/Style – The Practic Cap/Style lock system was especially developed for scooters. The base plate is mounted underneath the seat and a special theft-proof chain fixates the scooter with steered handlebar. A counterpart is clamped to the end of the handlebar (similar to steering dampers). The chain is conveniently stored beneath the seat. – Armored and revolving body-lock, safer and more practical- Anti-dust and anti-humidity cover- The most handy and practical security system- Completly integrated, with fixation support for each scooter- Steel wire, armored with steel cylinders and balls