Lichamp 13Pcs Hss Cobalt Drill Bits Set 1/16" To 1/4" With Three Flute For Hard Product Details UNIQUE 3X FLUTE DESIGN - Lichamp three flute patent design drill bit clears chips and particles faster, provide you with more efficient drilling experience. 4X LIFESPAN MATERIAL - Made from industrial grade M35 high-speed steel with 5% cobalt provides hardness for wear resistance, withstands max 1100 degreeF. MULTIPLE APPLICATION - Ideal for drilling in heavy-duty tough metal, including hard abrasive alloy metal, hardened stainless steel or cast iron. SMOOTHLY DRILLING - 135-degree split point tip twist design increases cutting speed with self-centering and prevents skating starts or walking. 13PCS DRILL BIT SET - Metal index case with size chart for easy bit access and identification. Includes drill bits ranging in size from 1/16 inch to 1/4 inch, with the 1/8 inch to 1/4 inch bits being specially designed three flute bits, and the four smaller bits from 1/16 inch to 7/64 inch being two flute bits. 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.