Total Gym Replacement Set of 4 Wheels/Rollers for Models 2000, 3000, Black 

• Bearings included with the thru hole of approximately 1/4"
• Bearing does not stick out of the wheel
• Additional hardwares may be required in addition with the M6 bolts to adapt the wheels under the glideboard of the Total Gym
• The outer diameter and the inner diameter of the wheel (black part) are 1.25" and 0.75"
• Mainly for Total Gym models 2000 and 3000