Set of 3 BLADE JOHN DEERE 21In. X 7/8In. REQUIRES (3) BLADES FOR 60 In. CUT JOHN DEERE. FITS THE 7-IRON DECK. JOHN DEERE M128485 JOHN DEERE M133381 JOHN DEERE TCU15881 OREGON 91-078 PRIME LINE 7-06797 STENS 330-501 STENS 330-591 WINDSOR 50-3035 LENGTH:21" WIDTH:2-1/2" C. H. DIA:0.9040" THICKNESS:.313I" _100% of all Rotary blades are manufactured in the USA, and includes commercial-strength and heavy-duty blades, commercial mulching blades, flat blades, high and low-lift blades, edger blades and de-thatcher blades. Rotary, which produces over 8.5 million lawnmower and edger blades annually. On average, Rotary manufactures one blade every 4.5 seconds and serves customers in all 50 states and in 68 countries around the world. Rotary Corporation is recognized as the worldï¾s leading supplier of outdoor power equipment parts, tools and accessories. Founded in 1957, the companyï¾s vast inventory of more than 9,000 outdoor power equipment parts is available through servicing dealers and distributors from coast to coast and worldwide.