I needed to tow my kids' trailer on a bike with a thru-axle, and this Burley Thru-Axle solved it. The 12 x 1.0mm thread pitch matched my fork, and the 167-183mm range gave me enough length to fit cleanly. Installation was straightforward and the axle felt solid once torqued up. I've done a few rides with the trailer attached and everything stays tight. If your bike uses a thru-axle and you want to run a Burley trailer, this is the part to get.