How to make wheel sliderotate in V slot

3DINNOVATIONS 3D Printer part Openbuilds V Gantry Plate Set Special Slide Plate for Aluminum Profiles V-slot mini five roulette : :

GM Enterprises - Offering Machifit V-slot V Gantry Plat Special Slide Plate Five Roulette For 2040 Aluminum Profile, Rickshaw Slider Block Set,

vesa slot The kit has everything you need to build a functional camera slider It takes advantage of the linear V-Slot extrusion system with rolling

voodoo slot V Slot Linear motion Câmera Slider this model work with the board JJRobots Devia