HUB FT SHI DH-3N72 GEN 36H QRFeatures-Requires no batteries-Less rolling resistance-Reduced weight-Plug in wiring-**SHIMANO HUBS ONLY AVAILABLE FOR WHEEL BUILDS**Item Specifications-Material:Aly-Color:Sil-Use:FT-Hub Drilling:36H-CTF-R:29-Spacing / Axle:QR-LTF-L:21-CTF-L:29-LTF-R:21-PCD-L:70-Gears:Dynamo-PCD-R:70-OLD:100