Sherman Step-Up and Step-Down Combination Transmission Gives your 4-Speed Tractor: - 12 forward gears* - 3 PTO gear ratios - 3 reverse gears - 1/3 greater economy - Increased usefulness - 37% more power Gives you standard PTO speed at 3 different engine speeds without changing ground speed. Gives you a slow reverse. *9 forward gears on older 3-speed tractors. Get the Proof...See Your Tractor Dealer Today! Saves You Twice its Cost - every Year! Installation in 2 hours - come in today!