Adjustable category I leveling box assembly with 14-3/8″ X .875″ leveling rod, 14-1/2 lower yoke with 1″ slot, hex nut, 2 lube fittings. Consists of: 3072422R2 housing, 3121964R91 fork 14-1/2 with 1″ gap, 69991C91 screw 7/8″ X 14-3/8″, and internal gear and nut. Fits models with fixed draft arms.

Make sure you check the length, there are 3 different length screws depending on the application:
3116725R91 screw 7/8″ X 18-1/8″ (purchased separately)
69988C1 screw 7/8″ X 16-5/8″ (purchased separately)
69991C91 screw 7/8″ X 14-3/8″ (included)