Brand: Gorilla Automotive Manufacturer's Part Number: 71983 Part Type: Lug Nuts Product Line: Gorilla Wheel Installation Kits Summit Racing Part Number: GOR-71983 UPC: 12619719839 Lug Nut Thread Size: 1/2 in.-20 Lug Nut Seat Style: Conical seat - 60 degree Lug Nut Head Style: Standard Locking: Yes Open End Design: No Lug Nut Overall Length (in.): 1.40 Conical Seat Type: Standard Washer Included: No Lug Nut Material: Steel Lug Nut Color: Chrome Wrench Size Required (in.): 13/16 in. Quantity: Sold as a set of 20. Notes: Includes 4 rubber valve stems with chrome caps and sleeves. Locks included. Gorilla Wheel Installation Kits From the pros at Gorilla Automotive comes everything you need to mount your wheels. Gorilla wheel installation kits include four of Gorilla's case-hardened steel wheel locks， and machined lug nuts (quantity varies based upon the number of lugs your vehicle has). Gorilla wheel installation kits not only make your life simpler， but they also cost you about 15 percent less than if you bought all the parts separately. We have Gorilla wheel installation kits available for most popular wheels.