1700Pcs Metric Nuts And Bolts Assortment Kit - M2 M3 M4 M5 Screws Assortment, Product Details Handy Fasteners Assortment: The 1700pcs metric bolt assortment includes widely used M2 M3 M4 M5 screws with corresponding nuts, spring flat washers, and hex wrenches. Each size of screw has 4 lengths, namely 8mm, 12mm, 16mm, 20mm 12.9 Grade Alloy Steel: All metric screws are made of premium grade 12.9 alloy steel with high hardness, superior rust and oxidation resistance. These assorted screws come in black oxide finish and are perfect for all sorts of projects and repairs Sturdy Storage Box: Our screw assortment comes in a solid and impact resistant storage case with dividers to keep screws well organized and easy to access. The compact design makes it convenient to store in your toolbox, garage, or workshop Easily Identified Label: The case is labeled with the sizes, types and quantities of screws, making it easy to find the right one for your project without having to sort through a jumbled pile. Clear charts are pasted on both sides of the lid for easier access Multiple Applications: This machine screw assortment kit with lots of different sizes is widely used in 3D printers, computers, machinery, furniture, car and motorcycle repair, DIY projects, instruments, electronic products and household appliances Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.