1-1/8" x 1-3/4", Lift Arm Pin, Category 2 Adjustable, Lift Arm Pins Connect Implement To Lift Arms On Tractor, Overall Length 6-1/8", Useable Length 1-3/4", Pin Diameter 1-1/8", Pin Type U, Thread 1-1/8 NF, Nuts & Washer Included, Yellow Zinc Plated To Resist Corrosion.