Titanium Coated Twist Drill Bits Set,1/16"-3/8",iiiBumwow Metal Drill,Ideal Drilling in Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass, with Storage Box（99PCS）

DRILLFORCE, premium, 99-piece set, 1/16 inch - 3/8 inch, high-speed steel titanium-coated twist drill bits, metal drill bits, suitable for drilling in materials such as low-carbon steel, copper, aluminum, and zinc alloys. Sizes: 1/16 inch (16 pieces), 5/64 inch (16 pieces), 3/32 inch (15 pieces), 7/64 inch (10 pieces), 1/8 inch (10 pieces), 9/64 inch (8 pieces), 5/32 inch (8 pieces), 11/64 inch (3 pieces), 3/16 inch (3 pieces), 7/32 inch (4 pieces), 1/4 inch (2 pieces), 5/16 inch (2 pieces), 3/8 inch (2 pieces) Titanium Coating: Made of classic 4241 high-speed steel with a titanium coating, ensuring superior performance and durability. Strength and Hardness: Made of HSS 4241 steel, rock hardness level HRC 60-62. Professional and DIY Use: Suitable for metal, wood, and plastic; not suitable for concrete/brick/stainless steel. Perfect for workshops or service vehicles. Comes with high-density storage boxes for organized storage, moisture and rust prevention, and easy portability and retrieval.

• High-Speed ​​Steel:* High-speed steel provides exceptional durability. The cutting edge is hardened and honed for unparalleled sharpness. The staggered cutting tooth design effectively prevents chatter, ensuring precise countersinking and smooth holes.
• Twist Design:* The separate drill tip and twist design increase cutting speed while facilitating self-centering and preventing drill bit deviation. Say goodbye to chips and debris; the twist design quickly removes chips and debris, leaving clean, smooth holes.
• A sturdy storage box keeps all your drill bits neatly organized. Molded size markings on the lid help you easily find the drill bit you need. The included center punch helps you mark and drill more precisely.
• Note:* Keep the drill cool and use gently. Proper use can significantly extend the life of your twist drill.