Park tool sliding thru axle adaptor 1729 tathe 1729 ta sliding thru axle adaptor is designed to allow any park tool prs 20 prs 21 or prs 23 repair stand to accept 12mm and 15mm thru axle wheeled bikes a great addition to the kit if you service multiple bikes including many cyclocross and road bikes that are increasingly featuring through axles features genuine part works with park tool prs 20 prs 21 or prs 23 repair stand accepts 12mm or 15mm axlesbuypark tool workshopfrom chain reaction