5 1/2' 16-18"BLADE DISC NOTCHED KING KUTTER'S ANGLE FRAME DISCS are constructed with heavy rigid angle iron. These disc connects easily to a Cat. 1 quick hitch compatible hitch and any three-point hitch with category one specifications. The disc gang axles are made of 1" square steel rods mounted on maintenance free sealed bearings. All disc harrows have angle adjustments of 10 or 15 degrees. The 5 1/2' discs have two adjustments and the 6 1/2' has three.