40 Pc Engine Bay Fender Washer Bolt Dress Up Kit For 10Mm Car/Truck/Suv Chrome for Ford F-150 This is a set of 40,&nbsp;&nbsp; 20 washers with 20 bolts. These will fit any 10mm bolt on your vehicle. Bolts are 6mm x 18mm, longer than many others out there. These washers will fit nearly every late model vehicle's fenders, core supports, trunk, etc including GM, Ford, Honda, BMW and many others.