Professional tapping set designed for faster, cleaner thread cutting and long-lasting performance. Key benefits Faster, cleaner tapping: Spiral groove design pulls chips away from the cutting edge for smoother cuts, reduced clogging, and less rework. Durable cutting performance: Made from high speed steel (HSS) with high hardness for wear resistance and consistent results across repeated use. Ready for mixed work: A 12-tap set that covers both metric and imperial standards so you can handle a variety of parts without buying additional tools. Versatile material compatibility: Effective on metal plates, plastics, brass and copper — suitable for most light- to medium-duty threading tasks. What it solves Eliminates common tapping problems like chip jamming and poor thread quality by combining spiral flutes with HSS durability. Reduces tool changes and inventory needs by providing both metric and imperial sizes in one kit. Extends service life and lowers replacement costs through wear-resistant material and improved chip evacuation. Features and performance Spiral grooves: Optimized for chip evacuation and smoother feed, improving accuracy and reducing breakage risk. High speed steel construction: High hardness and heat resistance to maintain cutting edges under load. Broad application range: Intended for tapping threads in metal plates, plastics, brass and copper; use with appropriate cutting fluid for best results. Typical use scenarios Automotive maintenance: Re-threading bolt holes in engine mounts or body panels made from steel or aluminum. Fabrication and repair: Creating or restoring threads in metal plates and brass fittings for HVAC and machinery assemblies. DIY and prototyping: Tapping holes in plastic housings, brass components, or copper fittings during product development or home projects. What’s included 12 taps total, covering both metric and imperial standards for flexible, on-the-job tapping options. Notes for best results Use suitable cutting lubricant for metal work. Select the correct tap size and thread pitch for your fastener standard. Back out taps frequently to clear chips when working deeper holes.