Products › Knife Kit 40' with Rollers - Double Drive Image 1 of 1 Knife Kit 40' with Rollers - Double Drive $5,701.00 Part #JD2029Compatible with: John Deere 640FD Add To Cart Added! Part #JD2029Compatible with: John Deere 640FD You Might Also Like Skid Shoe - Right End $160.00 Skid Shoe Kit 30' x 1/4" $1,420.00 Auger Liner 25' $1,182.00 Replacement Knife without Knifehead 25' $884.50 Auger Trough Liner 25' $1,182.00