What Is This for: This bike trailer hitch thru axle adapter is for Instep, Schwinn, Allen Sports Thule Chariot, Burley, Hamax, Retrospec bike trailers. Installing this adapter helps you to be able to assemble relevant tralier hitch to your bike.
How to Get the Right Size That You Need: We have 3 sizes now-M12*1.0 178, M12*1.5 181 and M12*1.75 187. Please select them based on your original axle. Pull it out, measure its shaft length and check the thread pitch (this is usually printed on its surface).
Tools Are Included, Start Your Installation Anytime: The package has whole set for you already, including wrenchs and spacers, etc. Therefore, you can start to put it on your bike immediately once you have the parcel.
Premium Material Makes Good Quality: Made of high quality alumium in order to keep its strength and durability while loosing more weight to make it easier to carry and be anti-rust.
What Else You Should Know: Thru axle has to be longer than hub in order to fit bike frame.