Shop Most Valuable Tools at ENERTWIST, Solve Your Real Problems More Simple! Our Vision: We aim to establish ENERTWIST as the premier brand of tools in the world while maintaining our uncompromising principles of pursuing excellent products, services and brands. Assorted drill bit set Comprehensive Uses All-purpose for use on wood, metal, cement, masonry, plastic drilling as well as multiple driving and fasteningIdeal for DIY projects and household maintenance and repair ENERTWIST Drill Bit Set, 109 Pieces Screwdriver Bits Set with Ratchet Screwdriver for Wood/ Metal /Cement Drilling, Assorted in Portable Carrying Case Specifications: 109 Pcs setMultiple Material HSS4241, Carbon Steel, CR-V 6150#Comprehensive drill bit setSpecialist componentsHigh quality built drill bit kit set to deliver maximum cutting speeds and clean, precision drilling, the strong and hard wearing heat-treated steel bits offer superior resultsWell storaged in tough case HSS Titanium Drill Bits HSS Titanium drill bits is great for drilling wood and plastic, and it can also drill both non-ferrous and ferrous metals (steel and cast iron) such as aluminum and brass. Black Oxide Twist Drill Bits The drill bit can be 50% harder than HSS. Black oxide drills are a good general-purpose choice, capable of efficient drilling of a wide variety of materials, including non-ferrous metals. Masonry Drill Bits The masonry drill bits actually use a chipping motion rather than cutting, which is why the drills themselves usually have a hammer action. For wood and metal, it’s much better to use twist drill bits since they slice into the material. Hole Saws When the cutting edge of the hole saw itself makes contact, there can be a noticeable torque reaction that can cause the drill to twist in your hands. Make sure you have a firm grip, and wherever possible keep the cutting edge level with the work surface. Spade Drill Bits Cutting edge with double side cutting spurs of high quality for durable and quick drilling effortlessly. Different Shapes for Widely Use Owning a good screwdriver set is an inexpensive way to eliminate the frustration of dealing with stubborn screws around the house. It’s also an invaluable addition to any professional’s toolbox. FOR YOUR SAFETY Always wear safety glasses or goggles when doing any kind of drilling. Small metal fragments, called swarf, are very sharp.