Sun Ringle"s top of the line 26" XC wheelset, the Black Flag Pros come tubeless ready out of the box with Stan"s sealant, rim strips, and valves Stan"s licensed BST technology on 24mm wide SUNringle eyeletted rims for better tire footprint Includes skewers and conversion caps to run the front hub as 9mm, 15QR, or 20mm thru axle Can convert the rear hub to 142x12mm with replaceable end caps (sold separately) 24 front/24 rear Wheelsmith straight-pull double-butted spokes and Wheelsmith alloy nipples. 1585 grams