These are standard thickness and 165 mm long, 8mm longer than standard Lambretta studs for use with a small packer plate and still get an extra deep nut on - essential when running a tuned engine, helps to torque the head down and keep it tight and stop a disasterous air leak .
 Try using these with the extra deep head nuts for an unbeatable combination, stop those head and base air leaks for good!
Top quality made from high tensile mild steel
Price is for 1, 4 are usually required