Yakima WheelHouse Thru Axle Skewer 12/15mm. The Yakima WheelHouse wheel holder mounts to nearly any crossbar and holds one wheel. It fits QR wheels from 24-29" out of the box and can be used with the optional thru axle adaptor for 12/15mm thru axles. The universal SpinVice clamp is compatible with an SKS lock to secure the wheel holder to the rack.