Nearly 1/3 heavier than our medium duty tillage disc, this heavy-duty box frame disc cuts through plowed soil even after rains and baking sun. Designed for serious farming or commercial operations where higher horsepower tractors are in use, this unit features 10-18 in x 3mm notched blades, 10-18 in x 3mm smooth blades, and heavy-duty sealed bearings. Front and rear disc gangs have adjustable cutting angles and together they cut a 6-1/2 ft swath with each pass. This disc can be pulled by 30 HP tractors and greater. Category I pins are included with purchase. This product features our durable, corrosion-resistant powder coat gray.