Vex 82mm 3 25in omni directional wheels vex 276 3526 omni directional wheels roll forward like normal wheels but slide sideways with almost no friction no skidding during turns these wheels are the same size as the vex 82mm 3 25in traction wheels removable wheel inserts allow for additional versatility use these wheels with either standard drive shafts or high strength shafts in either a driven or free spinning application vex 3 25 omni directional wheel pk4