Late model Mk8 & Mk9 Hewland and Webster ring gears mount with 8 of these 7/16-20 bolts. Early Webster ring gears mounted with 3/8-24 bolts. Be sure to check your ring gear and differential! Bolts come pre-drilled for safety wire and are sold individually. Replaces Hewland part number FT2211. Also fits FT, DG, and Staffs gearboxes.