SHIMANO Dura-Ace FH-7850 32H 10-Speed Road Bike Rear Hub Cassette Body Type: Shimano 9/1/SRAM, Hub Center to Flange: 34mm, Hub Color: Silver, Hub Drilling: 32spokes, Hub Flange Diameter: 44mm, Hub/Brake Compatibility: Rim Brake, Rear Hub Spacing: 13mm, Skewer Included: Yes, Weight: 254g Shimano Model: 152636