Fits to all Shimano hubs, and standard freehubs. High grade CrMo steel cog for your single speed set up. Reverse extra wide sprocket flange will protect your lightweight alloy free hub body. Features Material: CrMo Steel (extra strong). For Shimano HG. Flange: 7mm. Tooth thickness: 1,8mm. Compatible: 1 - 11-speed chains. Weight: 19g - 62g (+/- 5% weight tolerance).
Best Price: £10.50 from Merlin Cycles