Features:* The 6 most commonly used sizes to meet all your needs: 3mm, 4mm, 5mm, 6mm, 6.5mm, 8mm * Using 4241 high-speed steel, titanium surface plating process, in sharp at the same time, the wear resistance is very high.* Fully ground spiral flute design quickly reduces friction and heat, providing faster and cooler drilling performance.* 135 degree split point with straight shank prevents walking and makes that drilling is precise and faster.* No punch center is needed.* Suitable for cutting hard metal such as stainless steel, steel and cast iron, as well as wood, aluminum alloy and other softer metals, including tile, concrete, tile, brick, wood, plastic, glass, masonry and many more.* The product has sharp edges and high drilling efficiency. The center of the product has sharp series, and with its help, the drill bit can continue drilling horizontally after drilling.* Easy to install, suitable for most electric drills* Drilling needs to match with the coolant, the coolant is not included in the package. Application scenarios:1. Suitable for towing, cutting wood, soft metal, aluminum plate, iron, etc.2. Suitable for drilling and cutting grooves on thin wood boards, wood, aluminum and plastic boardsSpecifications:* Item Type: Drill Bits* Material: 4241 High Speed Steel * Surface Treatment: Titanium Plating * Structure: Saw & Drill * Application: Woodworking, Aluminum Alloy, Plastic Plate for Drilling & Cutting Grooves * Product Sizes: 3mm, 4mm, 5mm, 6mm, 6.5mm, 8mm* Quantity: 1 Pc* This is a 3-in-1 Serrated Drill Bit: Feature 1: can be used as a drill bitFeature 2: can be used as a sawtooth Feature 3: can be used as a saw blade on the surface of woodPackage Contents:1*serrated drill bit (3mm/4mm/5mm/6mm/6.5mm/8mm)Note:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.