Premium Quality: Made from tungsten steel and heat treated. Ensuring its high hardness, sharp edge, high precision, smooth cutting, impact resistance, high toughness; 5PCS: include 40/45/50/60/70mm, can be used for punching wooden products, mounted spherical door push tip, drawer, plastic products, wood, plywood, etc. Warm Tips: We are all over 40mm large size drills , it is better to use machines with good fastening performance for drilling operations, such as drills, bench drills, vertical drills and stand motor drill. if you need to work with a hand-held electric drill, it is better to use it with a vise with good clamping effect. Easy to Store: each drill is packed separately in a plastic bag containing oil to prevent rust. And each drill has a plastic storage box to prevent the drill bits from getting dull. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.