Quick-release axle adapter M12 x 1.0-160-178 mm quick-release axle with bicycle axle adapter, adjustable shaft length, compatible with most bike trailer couplings.

["Safe and stable The quick release axle adapter is made of high-quality material with a stable axle body. The axle part is made of high-strength aluminum rod. The adapter part is made of high-quality stainless steel, sturdy and durable.", "Adjustable length The product includes 4 spacers: 1 x 6mm conical spacer, 1 x 2.5mm straight spacer, 2 x 6mm straight spacers. You can use the included spacers to adjust the length suitable for your bicycle. The adjustable stem length is 160-178 mm.", "Practical design By replacing the original straight axle with this M12 adapter for straight axles, you can easily attach your bicycle trailer hitch to your bike. Note: The optimal mounting torque is 12 Nm.", "Size confirmation This quick release axle adapter is M12X1.0 (12mm diameter, 1.0mm fine thread). Please measure the original axle length and check the thread pitch before purchasing.", "How to choose Usually, the original axle is printed with text indicating its length and thread size. Please remove it from the bike for verification. If you are unsure, please contact us first!"]