Product Details: For hexagonal bolts and nuts. Improve the appearance of the product.Prevent weathering and tampering. Improve the quality of nuts and bolt heads. Easy to install and disassemble. Material: Nylon Type:Nylon Lock Nuts Optional models: M3, M4, M5, M6, M8, M10, M12 Color: Black, White Quantity: 50/100pcs Packing list: 50/100pcs (Nylon nutdelivery according to the package you choose) note: 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! Satisfaction Guarantee Our first priority is to provede you with an easy,pleasant,and anxiety-free shopping experience we try our best to give a clear,candid,and complete description of our products and their conditions we are always ready to help if you have questions or encounter a problem ,but if for any reason you are not satisfied with a product or service please do not hesitate to contact us It is very impottant to us that you have a positive & 5 star transaction with us. please contact us promptly before you leave us negative feedback.we weill try our best to resolve you problem. If I am not online,please leave your message,we will reply you once we log in.we reply every message except we have not get your message. Refund we accept refund if product not as decribed If the goods are damaged.Please provide photos.We can give you a full refund.Or send you a new item If the product is lost. Or the wrong number. If we make a mistake. We accept partial refund compensation Services After receiving the payment. We will send the goods within 12 hours _x000D_