The first universal chain wheel disc of break-resistant material and modern design. New mounting system with glass fiber reinforced adapter socket that can be screwed into crank center. Fits all cranks with inner thread. Disc does not come into contact with chain ring. Fast and easy mounting with single central screw.

Available in black or transparent material. For chain wheels up to 48 sprockets.

• Size - 21x21xcm
• Weight - 90g