Countersink Drill Bit Set, High Hardness Alloy Steel Wood Hole Timber Working Product Features Reliable Drilling: The drill bit tip adopts cemented carbide with HRC 50-54 high hardness, which ensures efficient cutting performance.One tool, multiple applications, improve your work efficiency. Adjustable Design: Equipped with drill stop, the counter sink drill bit enables easy adjustment on the drilling depth, meeting your needs,avoid debris accumulation, improve work efficiency. Wider Application: Suits perfectly for wooden boards rather than black metal, such as wood, MDF, particle board, dense plywood and so on.It is suitable for drilling machines with chucks, which can perform precise drilling on wood or wooden floors. It is recommended to perform center punch positioning before use, keep the drill bit vertical to avoid bending or breaking. Great Alloy Steel: Adopting premium alloy steel material, this drill bit that has been through excellent workmanship has great durability.Whether you are a DIY enthusiast, a home user or a professional construction engineer, it can meet your needs. Simple to Install: Comes with a compact size and a light weight as well, the 8x10x3.5 countersink drill bit is very convenient to install.Complete specifications for all your needs. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!