If you're anything like us, having multiple bikes with multiple axle types has turned into quite the headache. Keeping up with industry standards and be a real pain, on both your brain, and your wallet. The Park Tool Sliding Thru Axle Adapter allows you to convert any PRS-20, PRS-21, or PRS-23 repair stand to pair with 12mm and 15mm thru axle wheeled bikes. The Sliding Thru Axle Adapter is made from heavy-duty steel to maximize longevity, while the durable, and unmistakable Park Tool blue finish looks great. One side is for 12mm axles, and the other side is for 15mm axles, and you'll use the axle that comes with your fork to secure the bike in the repair stand.