When you&';re looking for a lightweight Gravel and XC wheelset built to roll fast and last forever the aluminum Crest MK4 is your wheelset.25mm rim width optimized for Gravel and XC tires up to 2.3Light and durable 6069 aluminum with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan&';s legendary easy tubeless inflation with a stronger more balanced wheel buildM-pulse ultra-low drag hubs with Enduro bearingsMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityIncludes tubeless tape and presta valves TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} 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;} Rim Width (Internal) 25 Front Axle 15mm Thru x 110mm Valve Presta Color Black Wheel Size 27.5" Defined Color Black ISO Diameter 584 / 650b / 27.5" Tire Type Tubeless Ready Rim Material Alloy Hub/Brake Compatibility 6-Bolt Disc Size 27.5 15 X 110Mm