6" Concrete Core Drill Bit, 1-1/4"-7 Threaded Core Drill Bit,, Wet Drilling Only Product Details ?????????? ????? ???? ?????: Our 6 inch core drill bit has 12 premium matrix turbo segments that adopt diamond materials and advanced welding processes, which significantly improves the sharpness and durability of this wet diamond drill bit. ???? ???????????: This professional diamond core bit is suitable for effective drilling in materials such as: Masonry, reinforced concrete, poroton, clay pipe, yton, brick, concrete and much more. With a drilling depth of 14 inches, they can reach deep into the material for various applications. ???? ??????????? ????????: Equipped with our core drill bit, you can drill efficiently and smoothly. The highly regular sawteeth and concentric axes design allow for high drilling performance while maintaining a long service life. It offers excellent durability and resistance, even when drilling in hard materials. ???? ??? ??????????: Diameter: 6 inch; Working length of core bit: 14"; Threaded connection: 1 1/4"-7, Laser-welded Segment size:0.95*0.14*0.47in (24*3.5*12mm); Number of segments: 12; WET DRILLING ONLY. Suitable for a variety of drilling machines; Note: use on rotary mode only. ???? ??????? ????: Our core drill bits is a perfect partner of your drilling tools with the innovative design, it is the perfect combination of advanced technology, durability and outstanding performance. Allowing to drill faster and last longer than the general purpose counterparts. 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.