145Pcs Cobalt Drill Bits Set, M35 Hss, 135 Degree Tip, Twist Jobber Length, 1/2" Product Details 145 Pieces Set Includes: 29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60; Set includes the drill bit holder with size index for easy storage and organizing Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable to tool holding systems and tightly clamped 135 Split Point Twist Design: The 135-degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with a sharp and durable cutting edge. Twist design for clear chips faster Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade M35 high-speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set Professional After-Sales Service: The outer box for the stepped drill bit is sturdy and easier to carry and store. If you are not fully satisfied with our product for any reason, please contact us for a 100% refund or replacement. 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.