CingYou Twist Drill Bit Set, Serrated Side Cutting Bit, 12 Pcs Titanium-Coated HSS Bits in 3, 4, 5, 6, 6.5 and 8 mm Sizes,for Wood Metal Plastic Aluminum

Versatile Bit Collection: This 12-piece set includes titanium-coated high-speed steel bits with serrated side cutting edges in 3, 4, 5, 6, 6.5, and 8 mm sizes for wood, metal, plastic, and aluminum Rugged Build: Hardened HSS cores resist wear, heat, and bending, while titanium coating adds surface strength, extending bit life through repeated hole-making tasks for dependable performance Efficient Cutting: Serrated side edges clear chips fast, reduce friction, and help the bit bite smoothly, so each pass cuts quicker with less heat and fewer stalls for smoother results Simple Setup: Standard round shanks fit common drills, while clearly sized bits in six diameters make selection quick, letting users start projects with minimal preparation or extra tools Wide Applications: Suitable for woodworking, metalwork, plastic fabrication, and aluminum tasks, this assortment supports furniture repair, DIY builds, hobby projects, and workshop drilling