Speed By Spectre, The 400mph company. Rooted in racing, designs and builds every product with the same goal in mind; Speed By Spectre products are designed to perform as good as they look using the highest quality materials and engineered for optimum fit and function. For GM cars with automatic transmission Bolts are grade 8 black oxide Security lock washers included Lifetime warranty ASIN B000BPZ4BO Brand Spectre Model 4696 Exterior Machined Position Center Item Weight 5.1 ounces Manufacturer Spectre OEM Part Number 4696 Item model number SPE-4696 Product Dimensions 6 x 4 x 1 inches Manufacturer Part Number 4696 Is Discontinued By Manufacturer No