Sali Cobalt Drill Bit Set, 10Pcs 5/16" M35 High Speed Steel Jobber Length Drill Product Details Package 10pcs 5/16" , sali drill bit set has connectable accessory storage system to optimize storage space M35 cobalt high speed steel: Industry grade m35 high speed steel drill bit set, much harder than hss used in similar drill bits set. These drill bits contain 5% cobalt, which increases wear-resistance and durability Fully ground process 135 split point: Fully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. 135 split point with straight shank prevents walking and makes drilling precise and faster. No center punch is needed Multiple application:Perfectly suitable for cutting through hard metal such as stainless steel, steel, sheet metal and cast iron as well as plastic, aluminum alloy, wood and other softer metals. Pay attention to speed, pressure and heat control during drilling Molded size:A rugged case keeps all drill bits well organized. Molded size on the case lid will help you to identify the bits you need with less effort 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.