3PCS HSS Step Drill Bit, 4-12/20/32mm, Titanium Conical Triangle, with Hexagon Shank, for Screwdriver Drilling on Steel

General descriptionThe 3PCS HSS Step Drill Bit set includes three high-quality drill bits with sizes 4-12mm, 4-20mm, and 4-32mm. Made from durable HSS stainless steel, these drill bits are designed for efficient drilling in various materials.Technical specificationsMaterial: High-speed steel (HSS)Sizes: 4-12mm, 4-20mm, 4-32mmMaximum material thickness: 3mmInstallationUse with an electric drill, ensuring it is as vertical as possible to avoid shaking or tilting.Avoid rotating the drill too fast for optimal performance.UsageSuitable for drilling thin iron plates, aluminum, insulation boards, PVC boards, and wood boards.The spiral design helps prevent slippage, making drilling easier and more efficient.Other informationIncludes a nylon cloth bag for convenient storage and protection.