CGN chain tensioner for wheel axle Ø11 to 12mm on MBK 51

Here is the chain tensioner of the selection CGN for MBK 51 or other mopeds. It is intended for a wheel axle Ø11 to 12mm, between maximum axis 50mm, between axis minium 29mm. Good value for money, ideal for a replacement, refurbishment! Comes complete, washer, nut nylstop.