Colony wasp cassette hub male conversion kitcolonys conversion kit for their wasp rear cassette hub is made from strong and durable crmo and comes with everything you need to successfully convert your rear hub featuresmaterial crmohub axle size 14mm hollow axleincluded 2x nuts and washerssuits wasp rear hubstrongdurablecan be used as a replacement kitbuy radio frames forks from chain reaction cycles the worlds largest online bike store