Product Description The 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. Park Tool Sliding Thru Axle Adaptor at Angry Catfish Bicycle $61.95 Buy Now Check Price on Amazon Check Price on eBay