Items MaterialAcrylicSize =d(thread diameter)xL(thread length)Metric thread diameterM3 (3mm) / M4 (4mm) / M5 (5mm) / M6 (6mm) / M8(8mm)Metric thread pitch0.5mm(M3) / 0.7mm(M4) / 0.8mm(M5) / 1mm(M6) / 1.25mm(M8)Product displayFAQ:1.How long will my package send out?We will send out as soon as possible, Usually all the package will be send out within 48 hours..2.Wholesalers and retailers are welcomed.For wholesale, just please contact to us, we will offer discount. If you are a retailer and want make your own business, we could send the goods to your customers directly and won& 39;t leave information about us if you& 39;d like to.3.What should I do if I don& 39;t receive my item? Or the product has some problem?Please contact us first, we will do our best to solver it, we would like to offer full refund or resend it for you. We are honest seller, so don& 39;t worry.4.How to do when I measure the size is smaller than ordered?Usually the screw will be look smaller, If you use the original rule to measure the screw, maybe it will have error, it will be look smaller. The correct way to measure the screw is by vernier caliper.5.The stainless steel fastener can be attracted by a magnet.Most people think the stainless steel can& 39;t be attracted by a magnet. But the stainless steel has many systems, some cant be attracted by magnet, but some can. And the stainless steel will have a little magnetic after it made to screw or other thing. If need the stainless steel can& 39;t be attracted by a magnet, Demagnetization is required. The correct way to discern it is stainless steel or not is useing spectroscopic instruments or potions.Please trust us, we only sell the high quality stainless steel fastener."