• Optical system uses low radiation laser beam to indicate toe-in or toe-out.• Single leg configuration and reversible contact probes allow on-ramp use.• Works on practically all cars and light commercials with rim diameters from 200mm(8") to 600mm(23.5").• Powered by 2 x AA batteries and includes operating instructions.Optical system uses low radiation laser beam to indicate toe-in or toe-out. Single leg configuration and reversible contact probes allow on-ramp use. Works on practically all cars and light commercials with rim diameters from 200mm(8") to 600mm(23.5"). Powered by 2 x AA batteries and includes operating instructions.• Optical system uses low radiation laser beam to indicate toe-in or toe-out. • Single leg configuration and reversible contact probes allow on-ramp use. • Works on practically all cars and light commercials with rim diameters from ø200mm(8") to ø600mm(23.5"). • Powered by 2 x AA batteries and includes operating instructions. • Model No. GA50Technical Specifi