Specialty Products Company HD Parts Alignment Tool

This extension set is used to measure the tandem axles on tractors in relationship to the front spring "U" bolts. The extenders establish a measuring point on the front axles so you can make accurate measurements to the rear axle. Includes 4 extensions-2with 3/4" threads and 2 with 7/8" threads. Use with 91877 or 91889 and 91888 or 91890.