Includes: 20 Chrome Closed-end Bulge Acorn Lug Nuts Specifications: M12 x 1.50 Thread Pitch, 1.40” Overall Height, 0.9” Diameter, 60-degree Conical Seat, 2-pc Bulge Acorn Design. Triple-layered chrome plating finish provides superior rust and corrosion protection when compared to generic paint coating. Utilizes traditional hex-body bulge-acorn design for fast and easy installation. Do NOT use an impact wrench for installation. ATTENTION: Refer to the owner’s manual or the wheel manufacturer’s guide for the correct thread size, seat style, length, hex and torque specifications. You assume all liability of improper installation which can result in accident and/or injury.