- Machined 1/4" thick 6061-T6 aluminum with stainless steel hardware
- Molded 80-durometer urethane roller with two sealed cartridge bearings
- Stepped spacer insert included that allows the use of both Q/R and bolt-on type hubs
- Wide roller groove allows range of chain-line options including BMX chains
- Both 12mm and 14mm axle compatible
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