Kendo Two Spiral Flute Cobalt Step Drill Bits With Automatic Center Punch, 5Pcs Product Details M35 COBALT HSS STEP DRILL BITS: The step drill has excellent sharpness and durability due to its industrial M35 high speed steel construction and titanium coating. PRODUCT DESIGN: 120 Split point tip accelerates cutting speed while increasing the wear resistance. The spiral-flute design provides a smoother cutting, and allows chips to be removed quickly. 50 SIZES IN 5 PCS: The step drill bits set includes 5 standard bits that can replace 50 individual drill bits and an automatic center punch. The hexagonal shank fits easily and securely into all power tools. WIDELY APPLICATION: Ideal for drilling holes in stainless steel, plastic, aluminum, iron and many other types of sheet metal. (recommended to add coolant or water when drilling metal plates and the speed should not be too high.) CONVENIENT STORAGE: All the cone bits come in a well-organized aluminum case for easy transport and storage. 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.