The adapter fits 4, 5 lug wheels. The pivoting arms can be removed and re-positioned to match any of these bolt patterns. Designed for balancing wheels with or without a center hole, or for a hole that is out of round, or center holes that do not fit the mounting cones, or mounting cones has been damaged, or mounting cones is not accurate.
For 40mm shaft / lug nut holes.
40mm refers to: measure the outer diameter of the screw rod of the machine.
This clamp is suitable for screw rod that can be removed separately.