A genuine John Deere #M77178 Standard Mower Blade. For JA and JX Series, and other mower models, with a 21" cut. John Deere belts contain strong material to prevent stretching and roll over which provides smooth engagement and consistent power. A genuine John Deere Original Equipment (OEM) part. Includes 1 blade.
12PB, 12PC, 12SB
14PB, 14PZ, 14SB, 14SC, 14SE, 14SX, 14SZ
JA60, JA62 before serial number 200,000, JA65