SPECS: Thread Pitch : Measured Axle Length: Compatible Burley Thru Axle: Includes: 1.0 160-174mm 12 x 1.0, 142-148mm One conical spacer and One flat spacer 1.5 172-178mm actual length 12 x 1.5, for 142-148mm One flat spacer 1.75 174-180mm 12 x 1.75, for 142-148mm One flat spacer 1.75 192-198mm 12 x 1.75, for 142-148mm, Long One flat spacer DESIGN: Specially designed for use with the Coho XC Thru axle is slightly longer so that it can stick out on the right side of the frame to attach the hitch mount FEATURES: Official Burley adapter for bikes with 12mm rear thru axles Quick and easy installation Accessories included: Thru axle and hitch mounts ADDITIONAL DETAILS: If you are unsure of the correct thread pitch or hub length, please consult with the manufacturer of your bike, or your local bike shop before purchasing a Burley Thru Axle Burley Thru Axle is not compatible with all carbon fiber bike frames (consult manual)