[DETAIL] Product Details: Material: Coppers + plastic Head shape: black, six petals Types of:Perforated / No Perforated��Optional�� Specification:M4 M5 M6 M8 M10 M12 Head diameter:25mm 32mm 38mm 48mm��as show�� Colour: Black Quantity: 1pcs/5pcs Package includes: According to your choice. Caution:M4-M10 is coppers core,M12 is an iron core Notice: 1. Due to manual measurement, please allow an error of 0.1-0.3mm. 2. Since different computers display different colors, thank you for your understanding, the actual product color may be slightly different from the image. If you have any questions about this product, please feel free to contact us. We will reply to you as soon as possible. Thank you very much for your support. happy shopping! [ATTRIBUTES] - Hign-concerned Chemical: None - Model Number: M4 M5 M6 M8 M10 M12 - is_customized: Yes - Hign-concerned Chemical: None - Model Number: M4 M5 M6 M8 M10 M12 - is_customized: Yes - DIY Supplies: Electrical - Material: Copper - Origin: Mainland China - Certification: None - Type: thumb nuts - Material: Coppers+ plastic - Head shape: black, six petals - Types of: Perforated / No Perforated - Quantity: 1pcs/5pcs