6061 T6 Aluminum Shell with a chromoly driver. 4 pawls,
Includes:: lock ring & cassette spacer, Laser etched graphics. Note: Rider weight limit: 99 lbs section Product Specs HUB TYPE: Cassette AXLE: 10mm DRIVER: 36 tooth ratchet ring SPOKE HOLES: 28 WEIGHT: 526 grams / 18.5 ounces