Blade replaces John Deere GX20249, GY20567(Set Part #, but blade is sold individually) fits John Deere L100 & L110 series riders, also fits Sabre and Scott mowers. 15-10635. All blades are sold individually. Order quantity of (2) blades for 42" cut. Be sure to match the part number from the owners manual for the part you are replacing with the OEM number(s) listed.