This is a Brand New blade for lawn mowers. Specs are as follows: B (3) blades for 60" cut. Fits Explorer, Lazer Z, and Turf Tracer models. Length 20-1/2" CH 1/2" Width 2-1/2" Thick .204 This replaces part numbers: 1-603874 EXMARK 103-3231 EXMARK 6269 ROTARY 91-217 OREGON Thanks For Your Business!! 91-217