MK Martin 3PH Rotary Cutter PRC48, PRC60, PRC66, PRC72 & PRC72HD 48" to 72" Width Horsepower 20 50 HP For Tractors Model:60" Rotary Cutter SHEAR PIN PRC60 1" 3 8 Z6 Min PTO I&J Horse‑Drawn Riding Cultivators 1" 3 8 Z6 Min PTO HP Requirement — 60 HP (Low Speed) Hydraulic Flow Requirement 10–15 gal min (37–56 L min) 10–15 gal min (37–56 L min) Utility Load Capacity 8 Heise’s protective vent port allows for internal moisture to escape and prevents any external moisture from entering the light bar housing and brush clearing with ease 955 Wheels 16" Segmented 16" Segmented Blades 1 2" x 3" 1 2" x 3" Tractor HP (Min) 40 50 PTO RPM 540 540 Gearbox Rating (HP) 60* 60* Deck 12 ga 12 ga Stump Jumper Yes Yes Rubber Guard Standard Standard Protection (Std