Characteristics: The 31/15pt wheel locking nut is used to remove or install the wheel anti -theft screw. Make the key model to the locking nuts Your car. Made in a quality resistant, durable and anti -rust quality material. This is a non -OEM product, accessory only! : Dimension: 20 x 28mm/0.79 x 1.10 (L*H) External diameter: 13.5mm/0.53 Internal diameter: 7.5mm/2, 95 Color: Silver; Material: steel Compatibility: for BMW Note: Please check carefully and compare shapes and The brands of the illustrated wheel blocking keys before buying. Please allow differences from 1 to 2mm due to manual measurement. The package includes: 1 x wheel blocking nut