1/2" 5 Hole Steering Wheel Spacer Extension to Grant 3 Bolt Adapter 1/2" 5-Bolt Spacer for 5 Hole Steering to Mount 3 Hole Adapter. Completely Smooth 1-Piece Aluminum Hub. Fits any 5-Bolt Steering Wheel and 3-Bolt Adapter: Grant, Forever Sharp, APC, Pilot, Mooneyes 5." Tall, 3.5" OD, .40" Inside Depth. CNC Machined and Polished to Semi-Mirror Finish.