Building on Hope&&';;s 30+ years of manufacturing hubs the Pro 5 is the combination of all their experience into a product that meets and exceed the demands of current and future bike technology.Sealed stainless steel cartridge bearings for unsurpassed reliabilityHub shell is machined from forged 2014 T6 Aluminium billetLarger spoke flange to enable stiffer wheel buildsFully serviceable and rebuildable with simple toolsConversions available for 15mm Boost 20mm Boost and Torq - sold separately TECH SPECS table{border-collapse:collapse;width:auto;max-width:100%;} td{text-align:left;padding:12px;font-weight:350;word-wrap:break-word;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Flange Diameter, Left 58 Flange Diameter, Right 52 Center to Flange, Left 25 Center to Flange, Right 34 Front Axle 15mm Thru x 110mm Color Blue Bearing Type Sealed Cartridge Weight 187 Defined Color Blue Spoke Interface J-Bend Hub Drilling 32 Hub/Brake Compatibility 6-Bolt Disc