Proudly built in barnoldswick, uk the pro 4 continues hope's tradition of reliability, serviceability and performance. With more axle options than ever before, find your fit with the hope pro 4. Equipped with stainless steel bearingstaller flanges than the pro 2additional end caps sold separatelyconvertible to qr 135mm, 10mm thru bolt x 135mm, 12mm thru axle x 135mm, and 12mm thru axle x 142mm with end capsfeatures a 9-11 road and mountain compatible alloy shimano freehub, includes spacer for use with 10-speed road cassettes and 11-speed mountain cassettesupgraded 44t ratchet ring and 4-pawl drive system for quicker engagement item specificationscolorblackhub drilling24cassette body typeshimano dynasys 11 speed mountaincassette body typeshimano/sram 11 speed roadcassette body typeshimano/sram 8, 9, 10 speedbearing typesealed cartridgeskewer includednodefined colorblackspoke interfacej-bendrear axle12mm thru x 142mmhub/brake compatibility6-bolt disccenter to flange, left33center to flange, right19flange diameter, left57flange diameter, right57.