The Rotary R544 Pro Truck 2D Wheel Balancer is designed to quickly and accurately balance a wide array of commercial truck, bus, and passenger vehicle wheels. The R544 features a microprocessor with self-calibration and self-diagnostic features, and specific balancing programs for static, dynamic, and light alloy/aluminum wheels. The R544 can raise up to 441 lbs with the integrated wheel lift and features a pneumatic wheel lock. The digital caliper with optical scanner provides 2D automatic data input of distance and diameter up to 26".