1/2 inch (approximately 0.5 cm)-20.Hexagonal dimensions: 3/4 inches (19 mm), Width: 0.91 inches (23 mm), Height: 1.38 inches (35 mm).Seat type: 60 conical seat .ML08AL special alloy steel (carbon steel) is used, and the integrated flange nut adopts cold forging process to increase hardness.The chrome-plated is rust- and -, and has been by 72-hour salt test. Precision threads.The threads are precision-machined to accurately fit the wheel bolts, providing reliable performance and easy installation. Suitable for Part Number wheels.replacement 1/2 x 20 lug nuts are suitable for aluminum or steel wheels.Compatible with most for models. Please confirm the size of your car stud thread and seat type before purchasing.Use a manual torque wrench (non-electric wrench).1/2 inch - 20 flange nuts are recommended for 75-85 feet of torque. Color: A:Black Material: Carbon Steel Package Contents: 20pcs x Lug Nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.