The Hope Pro 4 Rear Hubs QR have proven their reputation for bullet proof quality time and time again. These hubs are crafted with sealed stainless steel cartridge bearings and machined from forged T6 Aluminium billet. Hope Pro 4 Rear Hubs QR Features 4 Pawl Ratchet with 44 tooth engagement (8.2 deg) Standard 6 bolt disc fitting Larger spoke flange to enable stiffer wheel builds Unsurpassed reliability Aluminium or steel freehub body options Conversions available for QR, 10mm bolt in, 10mm, 12mm and 142x12mm thru axles Supplied with freehubs to suit 10/11spd Shimano, Sram XD and Hope cassette Weight: QR - 311g, 142mm - 300g