Replacement 24cm wheels for Hobie Trax 2 wheelcarts. Fits the new Hobie standard Trax wheel cart frame. Note, these are the newest version of Trax wheels that use cotter hairpins to secure to the stub axle, and are not compatible with the older frames that used locking knobs. To make use of the newer wheels you need the current Hobie wheelcart frame, which offers a simpler and more reliable design.