The Merritt Ackerman Sprocket is a simple yet super strong spoke design. Built from fully CNC machined 6061 aluminium to keep the weight down without sacrificing on strength. The Ackerman Sprocket comes with adapters for 19mm & 22mm spindles so it can be run on most cranks. section Product Specs TYPE: Bolt On
Material: Aluminium WEIGHT: 73.7g (2.6oz)