The Model 8550 Offset Disc - Does the massive 1375 one better. This 14” spaced heavy weight is built to work in the toughest conditions. 32” x ½” notched blades are standard for cutting through the most stubborn soil. A 10” x 4” x ½” steel frame provides the backbone for the toughest conditions you can put the 8550 through. Average weight per blade is 582 lbs. Heavy duty T2-215 series bearings with special drive lug spools combine to create the toughest bearing assembly in the industry. Four 12.5L x 15FI Load Range “F” tires carries this weight to and from the field.