Set of two (2) replacement blades for John Deere mowers with a 42" Edge mowing deck that use blades with a 0.675" (just over 5/8") round center mounting hole. Replaces GX20249 and GX20433 blades. Made in USA by Rotary Corp Fits the following mowers with 42" cut decks: JOHN DEERE: L100, L100-L118, L105, L107, L108, L110, L111, L118, L17.542, L1742, 14.542GS, 14.542GS Sabre, 1642HS, 17.542HS SABRE: most Sabre with 42" decks