Vigrue 1105Pcs 25 Sizes Metric Sae Set Screw Assortment Kit Internal Hex, 18 Product Details ??Standard Threads?: metric GB77 set screw and inch DIN916 set screw, all these grub screws with clean cut and fine threads provide stability for mechanical components fix and prevent mechanical components from loosening. ??25 Various Most Used Sizes?: Accommodating metric sizes of M3 M4 M5 M6 M8 and inch sizes of 1/8-40, 5/32-32, 3/16-24, 5/16-18, totally 1105pcs, 25 different sizes can meet your daily differnt demands. ??Wide Application?: set screws are used to fix mechanical components to maintain position and prevent mechanical components from loosening, provide stability and reduce the risk of equipment accidents, suitable for door handle, faucet, machinery, electronic products etc. ??Handy Package??all 25 sizes are packed in single bags and put in a sturdy transparent box which come with clear size and quantities chart. Easy to get the exact size you need and save your time, it also come with matching wrenches for convenient using. ??Trustworthy Service? VIGRUE deeply cultivate in the field of fasteners for many years, if you have any professional question, we will solve for you, and we provide lifetime service for our product problems 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.