Introduced in 1993 as the first product from Gebhardt, these rings have an excellent reputation for quality at an affordable price.

The material is Duralumin or Dural (an old fashioned word for a type of hardened aluminium alloy which was used for building zeppelins and in other vintage auronautical applications) which is a material also familiar to connoisseurs of vintage bike parts.

This means that it is likely to last as long as chainrings from TA and other revered makes of yore. Of course it is machined with an efficient tooth profile and has a deep shape for stiffness.

For 1/8" chain.

Black rings may be all black or black with silver teeth as pictured.