5-Lugs Balancer Finger Plate Adaptor Fixture 40mm Shaft Wheel Tire Spin Specification: Colour: Black Packing size: 35*21*16cm Package weight: 4.3kg Description: This is special designed for balance 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. It Is a great design and quality made, easy to use, and balance more accuracy, it is good for using in the garages, tyre wheel business, mechanic workshop etc. Wheel balancers come with a standard set of mounting cones which allow the operator to mount wheels that have a "true center". but If your business is geared toward the high performance market, then this adapter is the per.