The Racingline Stud and Nut Kit is an ideal solution for motorsport and track use. Advantages include a stronger fixing method than with wheel bolts, more reliability, and significantly faster wheel removal and installation. Make quick work of tire changes and enjoy peace of mind knowing your wheels are securely installed. Converting your car to our Stud & Nut Kit is a simple, reversible upgrade that will speed up your wheel changes. Our Stud & Nut Kit also allow for the safe use of different spacer size setups without the risk of running out of bolt threads. Beautiful midnight-black gloss anodised finish on the nuts will smarten up your car’s looks as well as its practicality. Both conical and ball seat lug nuts are available to suit either factory or aftermarket wheels. Which Stud Lengths do I need?- If your vehicle is No wheel spacers, or wheel spacers upto 10mm in width, You need the 70mm Studs- If your vehicle has 11-20mm Wheel Spacers installed, You need the 80mm Studs.- If your vehicle has 0-10mm Wheel Spacers on the Front, and 11-20mm Wheel Spacers on the Rear, You'll need the 70/80mm Split kit.Stronger FixingM14 x 1.5 High Tensile Steel Motorsport Studs and larger anodised Wheel Nuts exceed the strength of the factory bolts for ultimate strength and safety. Quick Wheel ChangesStud and Nut kits are suited to any car that sees track use with regular wheel swaps. The studs really help to speed things up when you are trackside. Easy InstallationThese studs screw in place of your original wheel bolts with allen drive inserts to make installation a breeze. Plus easily removed in future. Precision engineered; for perfect performance!M14 x 1.5 heat treated high carbon steel stud with chrome plated finishLightweight M14 x 1.5 7000-series aluminium open-ended nuts with gloss anodised nutsInternal 6mm allen stud drive for accurate fixationsKnurled outer collar for much easier finger grip8mm of unthreaded stud shank for brake disc clearanceOversize 19mm nuts – greater surface area for contact & ease of use