ECS Tuning's conical seat wheel bolts adhere to some of the most stringent testing and safety standards, and also feature a corrosion resistant black zinc coating for longevity and a change of style. The conical seat of the bolt was designed for compatibility with most aftermarket wheels, to ensure your wheels are safely secured. Make sure your wheels are fastened correctly with Black Conical Seat Wheel Bolts from ECS Tuning. Bolt specifications: Diameter - 14mm Thread Pitch - 1.5mm Length - 47mm *When installing wheel spacers, add the size of the spacer to the length of the OE wheel bolt for proper fitment (ex. 27mm Length OE Wheel Bolt + 15mm Wheel Spacer = Require a 42mm Length Bolt)