Our thru-axle kit comes with everything you need to mount most 12x142 thru-axle bikes on your KICKR SNAP indoor trainer. This accessory will work with all editions of the Wahoo KICKR SNAP. It includes the following: - Threaded axle spacer M12 x 1.75 Coarse - M12 x 1.5 Medium - M12 x 1.0 Fine - End Cap