Products › John Deere 7720K Knife Bar Conversion Kit 77007720 to 9000 Style John Deere 7720K Knife Bar Conversion Kit 77007720 to 9000 Style $680.00 Part #7720KCKnife Bar Conversion Kit - John Deere 7700, 7720 to 9000 Style Add To Cart Added! Part #7720KCKnife Bar Conversion Kit - John Deere 7700, 7720 to 9000 Style You Might Also Like Adjustable Chaffer 39" x 58" - Massey Ferguson 760, 860 $1,525.00 Airfoil Chaffer 58" x 58" - Gleaner M Short $712.00 Feeder Chain 3/4" - Gleaner R62, 72, R75, R65 Lower (Feeder) S3 L96 CC15 $2,036.00 Feeder Chain 3/8" - Gleaner C62, Massey Ferguson 8680 Upper (Separator) $2,691.00 Bottom Sieve 45" x 51" CORN - Gleaner L, L2 S/N -19500, Short Shoe $1,455.00