Grid RC BalancePro wheel balancer
The new BalancePro from Grid RC is designed for the 1/8 racing purist, that want an ultra accurate high-end wheel balancer. The Grid BalancePro uses a precision ground 4mm balancing-rod that rides on lubricate-free micro ball bearings, that is virtually near-zero friction. The micro ball bearings are ultra sensitive to even the slightest wheel imbalance. Racers can also utilize the three adjustable feet with the aid of a bubble level for further increased accuracy.
Source: Grid RC [gridrc.com]