If the weather isn't looking favorable or the lack of daylight has us doing a workout inside, we get our Wahoo KICKR SNAP trainer and thru-axle bike ready for the pain cave with the KICKR SNAP 142mm x 12mm Adapter. The kit comes with three M12 axles in coarse (1. 75), medium (1. 5), and fine (1. 0) thread pitches. We simply match and replace the existing axle with one of the three provided and replace the end cap on the Snap with the new included cap and we're good to go.