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 Kit 35' x 1/4" $1,660.00 Draper Belt LH, RH $2,138.00 Skid Shoe Set 15' x 1/4" $777.00 Auger Liner Kit 35' $1,594.00 Replacement Knife without Knifehead 18' $588.75