Product information: -product name:PC (polycarbonate) Acrylic Plastic Transparent Metric Phillips Pan Head Screws M4 Assortment Kit -Material: PC (polycarbonate) -Color: Transparent -Metric Size: M4 -Length: from 4mm to 45mm -Quantity: Total 295pcs Package includes: M4X4/20pcs M4X6/20pcs M4X8/20pcs M4X10/20pcs M4X12/20pcs M4X14/20pcs M4X16/20pcs M4X20/20pcs M4X25/20pcs M4X30/15pcs M4X40/20pcs M4X45/20pcs Hex Nut M4/30pcs Plain Washer M4/30pcs Features: -High quality polycarbonate(PC) materail meet with Rohs,Transparent,Good Insulation, Corrosion Resistance, Light Weight, Beautiful Appearance. Widely used in Home Decoration,Wind Power Industry, Aerospace Industry, Office Equipment industry, Petrochemical Industry, Electronics industry, Communications Industry, Ship-building Industry, Machinery, etc. -High Quality-Control Standard: Each lot will be inspected to meet with the standard of size，and each lot will be randomly inspected by go no go gauge -Good Insulation and Corrosion Resistance makes it can be widely used in many electronics equipment and home decoration to replace the general steel screws for anti-rust -Beautiful Outward Appearance and durable high quality material: made by high quality of polycarbonate material meet with Rohs,high transparency and light transmittance makes it looks like not only the general screws and nut but also a craft. It can be perfectly to meet your requirement of usage and beauty -Beautiful Transparent Plastic Box Packing Which Has Movable Cell: inner sticker showed screws' size and standard of each cell.So you can easily to manage these tiny parts for your general use. Warm Tips: - Dimensions are measured manually, please allow slight errors. - Color may vary slightly from the online image due to your monitor colour settings, please refer to the actual product, thank you for your understanding. - If you have any questions about using these plastic screws, please feel free to contact us. We will solve your questions as soon as possible.