Drill Tap Set With Quick-Change Adapter Of 13Pcs, 6 Sae Sizes: 6-32Nc To Product Details Multiple Sizes: 6PC SAE: 6-32NC, 8-32NC, 10-24NC, 10-32NC, 12-24NC, OE-20NC; 6 metric-M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5; 1 piece-quick change adapter. Designed for Metal Work: Crafted with high-speed steel and a black oxide coating, these tap bits are ideal for a wide range of materials, including thin plates or sheet-metal up to 1/4 inch, copper, brass, aluminum, plastic, and more. High efficiency: These drill tap bits are expertly crafted from high-speed steel, ensuring durability and precision in metalworking applications.It can drill, tap, deburr and countersink copper, brass, aluminum, metal plates and plastics at the same time, so as to complete the work quickly and completely, greatly saving processing steps and time costs, and improving work efficiency. Convenient Features: Our drill and tap sets include a 1/4" hex shank quick-change adapter for ease of use and extended reach. Comes neatly packaged in a storage box with clearly marked compartments for easy storage. Quality Commitment: If for any reason you are not satisfied with your purchase, please contact us. We offer 30 days money back. 100% satisfaction guaranteed, risk-free shopping! 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.