Standard Croplifter Sold as a Complete Kit.

Includes:
Croplifter Saddle-75mm
Set Screws 3/8 x 1 1/2" Unc Zinc Plated (Ex USA)
Nut - 3/8" Unc Zinc Plated (Ex WCF)
Bolt - spline - 7/32" x 5/8"
Attachment of Knife Section Lock Nut - 7/32"
Knife Guard Bolt is 2 1/2" x 7/16"
Wizz Nut is 7/16" Bolt Hex Head is 2-1/2" x 7/16"

Knife Guard Bolt Hex Head 2-1/2" x 7/16".

Advise if Hex Heads or Cuphead Bolts attaching Knife Guards