Brand: Spidertrax Off-Road Manufacturer's Part Number: WHS007K Part Type: Wheel Spacers Product Line: Spidertrax Off-Road Wheel Spacers Summit Racing Part Number: SDR-WHS007K UPC: 850001304078 Thickness (in.): 1.250 in. Thickness (mm): 31.75mm Center Bore Diameter (in.): 4.18 Center Bore Diameter (mm): 106.17mm Lug Nuts Included: Yes Lug Bolts Included: No Wheel Studs Included: Yes Thread Size: M12 x 1.5 Wheel Spacer Material: Billet aluminum Quantity: Sold as a pair. Spidertrax Off-Road Wheel Spacers Bigger tires need clearance―and adding that suspension lift is only half the battle. Spidertrax Off-Road 6061-T6 billet aluminum spacers are an easy way of spacing out front and rear axles that run OE wheels. This added spacing is necessary for keeping those larger tires from crashing into your frame rails and suspension links at full turn. Simply bolt-on like a wheel， and off to the trails you go. Each kit comes with two wheel spacers， 10 wheel studs (pre-installed)， 10 lug nuts， and a package of thread locker. Each wheel spacer is anodized in blue， using a double anodizing process for twice the corrosion resistance. In addition， each wheel spacer is wheel and hub centric for a perfect fit. The spacers are available in a variety of thicknesses， center bore diameters， and thread sizes. Order the pair recommended for your vehicie.