General description These 20 pieces of radiator overflow coolant expansion tank bleeder screws are designed for various BMW models, including E36, E39, and E46. Made from durable brass, each screw comes with a pre-installed rubber O-ring for a secure fit. Technical specifications Part Number: 17111712788 Material: Metal (Brass) Color: Gold Package Includes: 20 pcs x Tank Bleed Screw Measurement allowed error: +/- 1-3 cm Compatibility and accessories Please check the compatible vehicles list to ensure this part fits your model, including Mini vehicles. Other information Washer color is random; specific color requests are not accepted. Light reflection and different displays may cause slight color variations from the actual product.