Unior Pro Truing Stand Improved Precision A true wheel is a happy wheel, and the best way to keep a wheel trued is with a truing stand. The Unior Pro Truing Stand has a base that has been made stronger for improved precision, and it also has added conical one-size-fits-all magnetic thru-axles adapters that can be stored anywhere on the base. The arms have been lengthened to accommodate 29+ wheels more effectively, and the calipers have been widened accordingly. Threads, springs, and bearings were all revised, resulting in smoother operation plus less frequent calibration. Additionally, Unior included white high-gloss stickers you can apply to the base and caliper arm to improve background contrast, making it easier than ever to use. Features Longer and redesigned upright arms for improved clearance of 29+ wheels and truing precision Accommodates wider axles and works with thru-axle hubs up to 197m width New bearings on the upright arm adjust axle are spring-loaded for improved precision and reduced frequency of calibration Redesigned caliper tips for easier radial truing Accepts wheels from 16 to 29+ inch with or without tire Supported axles: solid, quick-release, and thru-axle hubs | Unior | Pro Truing Stand Pro Truing Stand