Lift Arm Pin 7/8" x 1-5/8", Category 1 Adjustable, Lift Arm Pins Connect Implement To Lift Arms On Tractor, Overall Length 3-7/8", Useable Length 1-5/8", Pin Diameter 7/8", Pin Type U, Thread 7/8 NF, Yellow Zinc Plated To Resist Corrosion.