20pc Wheel Stud Conversion - 12x1.5 to 12x1.5 - Includes 20pc Black Lug nuts - for many BMW Vehicles: 128i 135i 318i 320i 325i 328i 335i M3 525i 528i 530i 535i M5 Z3 Z4 E36 E46 E60 E90 E92 E93 Black 20 Stud Conversions & 20 Black Cone Seat Lug Nuts (Open Ended) Shank Length: 44mm | Thread Pitch: 12x1.5 | Overall Length: 61mm (~2.4in) | Color: Black Allows for faster and easier wheel changes. Allows the use of aftermarket Tuner and Racing Lug Nuts Zinc coated. Corrosion/Rust Resistant. Heat Treated coating prevents oxidation and protects the metal.