Stand - Professional - Wheel Truing - Digital - 10-699010Includes two digital indicators to true side to side and up down simultaneouslyno more guesswork. Lightweight, yet rigid, aluminum frame and axel fits wheels from 16 21 with 20 mm 30 mm axles. Threaded cones on axle keep wheel more secure than cones with index screws. Stand's base has adjustable rubber feet to maintain level axle. Flexible mounts fix indicators exactly where needed. Professional truing stand for more precise results.