CNC-machined premium-quality aluminum set-up wheels for 1/8 GT automobiles enable perfectly exact and repeatable set-up adjustment and tweak correction. Eliminates set-up errors inherent in making use of standard off-road tires. Precision-machined to exacting tolerances, each aluminum set-up wheel in a group is completely matched. Useful for trip height checking, tweak checking and camber checking of all of the GT automobiles.