This is a set of 3D printed rocker plate feet designed for a Kickr V5 bike trainer. Made from plastic, these are designed to provide a more realistic cycling experience. The feet can be attached to the trainer to enhance stability and enable a smoother rocking motion while cycling indoors. Perfect for cyclists looking to add an element of movement and flexibility to their stationary training sessions. No tennis balls included Locking pins included “thick and thin” as some machines have thicker rubber in place then others