APPLICATION-Precision drilling in soft materials like acrylic, plastic, wood, etc.-High-density hardwoods (rosewood, teak, etc.)-Composite boards & carved components, detailed craft carving & mortise-tenon joinery-Woodworking DIY/furniture making/artistic carvingABOUT THIS PRODUCT-4341 high-speed steel #4 micro drill bits are known for their has high hardness, good wear resistance, and toughness. They are particularly effective for drilling into soft metals and other low-strength materials.SPECIFICATION--Cutting Diameter: #4-Flute Length: 63mm (2.48")-Overall Length: 95mm (3.74")-Cutting Angle: 135°-Package: 5 packs of cobalt micro drill bitsNOTE-Maintain 90° perpendicular to the workpiece-Start at low speed (500-800 RPM), then adjust-Use cutting fluid to effectively reduce temperature-Always wear safety goggles and secure the workpiece
