Speedone Torpedo 8 Pawls Hub Material: AL6061/ T6 Alloy Axle Material: 7075/T6 Weight: 135g Front; 300g Rear OLD/F:9*100mm, QR/15*100mm OLD/R: 10*135mm, QR/12*142mm Spoke Hole: 32H Cassette Body: AL7075/T4-T6 Bearings: Taiwan NBK F: 2pcs R:4pcs Bearings Sizes: 6903/17287 Made in Taiwan