This is a complete let of Cylinder head studs, nuts and washers for the E-Type using the early 4.2 engine. This range of engine has 10 studs which are 6.5 inches long, 3 Studs that are 6. 7/8 and 1 stud that had centering dowwl. These studs are made from 8740 Nickel Chrome Moly Steel with a 190,000 psi Tensile strength and a roleed thread to MIL-S-8879 spec and finished in a black oxide finish against corrosion. This is a techinal way of saying these are the best studs you can buy for your E-Type.