Bush Hog_s MBX Series Medium Duty Box Blades are the ideal choice for use around the farm or by landscape contractors on the jobsite. These box blades are rated for use on 2WD tractors up to 65 PTO horsepower and 4WD tractors up to 55 PTO horsepower with a Cat. I or II 3-point hitch. They feature a heavy duty A-frame heat-treated scarifier shanks and a swinging tailgate to provide years of trouble-free performance. Whether you are grading driveways cleaning out barns or leveling a construction jobsite these medium duty box blades are sure to meet your needs.