The Thule Outride 561 comes with a quick release attachment for a standard 9mm quick release fork. It also comes with a piece of aluminium pipe that can replace the quick release attachment, for 20mm through axles. If you have a 15mm through axle, this adaptor fits inside the pipe for the 20mm through axle to enable you to attach your 15mm through axle fork to the carrier.
Outer Diameter: 20mm. Inner Diameter: 15mm. Length: 109mm.
