6 Pcs, 3/8", Black And Gold Twist Drill Bits Product Details Specifications: High Speed Steel: Twist Design: Notice: Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage. Cobalt drill bits: Classic M2 High Speed Steel construction with Black and Gold finish for proven capability and durability. Hardness: M2 Twist drill bits? Rock wall Hardness Level HRC 62-63. Package Size: 6 Pieces drill bits in a plastic bag, Diameter 3/8 inch, Total length 5 inch, Working length 3-5/8 inch. Professional DIY Use: For use on metal, wood plastics. Not For Use On Concrete / Masonry. Perfect match for workshop or service vehicles. 135 Tip Twist Design: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster. 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.