Greg Smith Equipment Sales offers their a line of ATLAS tire changing and ATLAS wheel balancing equipment. The ATLAS 489 can handle tire sizes up to 39.5" in diameter with an internal clamping range of 14" to 24" and an external clamping range of 13" to 23". ATLAS offers motorcycle and ATV adapters that allow all of the ATLAS changers to handle almost any size tire. The 489 Model has twin-cylinder locking table top clamps and nylon inserts for alloy wheels.