M2 M2.5 M3 M4 M5 M6 M8 M10 M12 White Black Nylon Plastic Flat Washer Plane Spacer Insulation Seals Gasket RingMaterial: NylonSize = ID(inside diameter) * OD(outside diameter) * T(Thickness) FAQQ: If i fail to get hold of the object in estimated time ?A: Don't fear ,because occasionally there'll be some delivery delay due to holiday or fallacious address, pls touch the vendor by way of e-mail, we are able to allow you to contact the transport company to unravel it efficiently and eventually get it . If you can't get hold of it, we are able to full refund or resend it for you. We are honest seller, so don't worry.Q: What may well i do if i receive the damaged item?A: Don't worry , will subject you the refund or ship a new one if we get the broken photograph of the article from you .Q: I am no longer satisfied with the product,what should i do?A:Please contact with us in time, we can assist you to resolve it.Feedback1. We preserve excessive standards of excellence and try for 100% visitor satisfaction!2. Your suggestions is essential for us, earlier than giving us impartial or unfavourable feedback, we are hoping you to contact us,so that we can satisfactorily clear up your problem!3. We will carry items on time,but transportation time we can't correct know after delivery,because it is related to distance, weather, etc. If due to transportation time impression your mood,Please goal analysis, since it isn't always my responsibility,but the responsibility of the shipping company.Please don't give me impartial or destructive suggestions because of the transportation time.