The DMR 3 Pawl 8/9 Speed Rear Hub is made out of a 1 piece cold forged & CNC machined 6061 heat treated alloy body, proven 3 pawl ratchet mechanism & steel cassette body. Well sealed bearings with internal double lip seal makes for a good barrier from contamination by water & dirt. Beautifully finished & excellent value with laser etched graphics forged 6-bolt international standard disc mount.