This is the AKA 2 In 1 Handheld Wheel Balancer. The 2 in 1 handheld wheel balancer has been meticulously engineered to balance most 12mm hex and 17mm hex wheels, including 1:10 buggy, short course, 1:8 buggy and truggy. The sleek, lightweight design fits in any toolbox without taking up much room. Package includes one balancer and one block of balancing clay.