One Pair of Auto Wheel BalancersFits 22.5" Wheels, SteerBolt Holes: 10Bolt Circle 11.25"For Aluminum Wheels onlyTHE PROFILE OF THE 16.5” DRUM NEEDS TO HAVE AN APPROXIMATE 2” SHOULDER Works on Tractor Trailers, Class 4, 5, 6, 7, 8, Trucks, Motor Homes,...