OEM Part Numbers: GC00344 / GC00175 JS60 JS60H JS61 JS63 JS63C JS63E Walk Behind Mowers 8800 TerrainCut Lightweight Fairway Mowers, 3245C Independent Rotary Deck Mower, SP6211 SP6213 Scotts Walk Behind Mowers, Sabre 21-Inch M10 M21 23 Walk Behind Mowers John Deere lawn mower blades are manufactured with a combination of carbon and boron to provide hardness for a long life and sharp edge without breakage. Standard Lift Mower Blade John Deere Authentic OEM Product