Intake/exhaust manifold spiked extended stud kit. This listing is for 10 studs, 10 chrome spikes, and 10 washers. Stud length 50mm total length. Thread pitch is 8x1.25. Chrome spikes screw onto stud in place of a nut. NOTE Washers are for intake side only !! Not intended for exhaust side. Don't forget to check out our other listings for parts and accessories to suit your ride. We are always expanding so keep an eye out for more supreme quality products from Sickspeed. Purchase includes a die-cut vinyl decal: Check out the manufacturer's website for more info and pics.