General description This 12 Piece 1/4' Hex Shank Drill Bit Set is designed for DIY enthusiasts, featuring a variety of drill bits suitable for multiple applications. Each bit is crafted from high-speed steel (HSS) and coated with titanium for enhanced durability and performance. The set includes step drill bits, countersink drill bits, a taper drill bit, a multi-drill saw, and a central punch, all equipped with a 1/4" hex shank for quick and easy switching to power tools. Technical specifications Material: High-speed steel with titanium coating Set includes: 3 step drill bits (sizes: 5/9/14 mm, equivalent to 4-12/20/32 mm), 1 taper drill bit, 6 countersink drill bits (sizes: 6.3, 8.3, 10.4, 12.4, 16.5 mm, tip 20.5 mm at 90°), 1 multi-drill saw, 1 central punch Hex shank size: 1/4" (6.35 mm) Laser step size marking for precise drilling Compatibility and accessories Compatible with all common cordless drills/drivers Can be used on various materials including metals, mild steel, wood,