Gunson Trakrite Drive Over Wheel Alignment Gauge Trakrite is the simplest, most accurate device for checking the alignment of the steered wheels of car and light commercials. It is a roller bearing platform over which one front wheel is slowly driven with the wheels in their straight ahead position. Product Features: Checks the alignment of steered wheels on cars and light commercials. Tests accuracy in only 5 minutes. Easy and simple to operate with no technical knowledge needed. Weight 1Kg, Width 270mm, Length 470mm, Height 20mm