This is a 23.8mm to 19mm chainwheel adapter for steel sprockets. It is black and made out of steel. It will adapt one-piece crank size sprockets that have a 23.8mm bore to fit a 19mm spindle. This will work great with thinner sprockets and spiders ranging from 2.5mm to 4mm thick that other adapters are simply too tall to work properly.
BMXGuru.com / C&W Cycle
702 North St.
Morenci, MI 49256
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