Check the listing for details. Arm Rest Kit for Utility Suspension Tractor Seat. Condition: New. Listed at 114.94 USD. Trapezoidal Seat Arm Rest Kit. Arm Outside to Arm Outside is 23-1/4". Use With Seat Item #'s MS114, MS115, MS116, MS118, MS119, MS120, MS144, MS145, MS146. Bottom Bolt holes slotted 3-1/4" - 4-1/4". Top Bolt holes c-c 4-1/4.