1 1 XCAN 3.0-3.9mm PCB Circuit Board Drill Bit Set Carbide Micro Drill Bit For PCB Printed Circuit Board 1PC Mini Drilling Tool Features: 1. Precision machining by high accurate equipment; 2. With good milling and cutting performance, ensuring high efficiency; 3. High hardness, wear resistance, and intensity; anti-bending; 4. To removing chips, with big space and small resistance; Smooth chip removal, less heating value, to reduce pollution; 5. Sharp cutting edge, reduce cutting force, lower breaking rate and improve the quality of hole wall; 6. Symmetrical cutting blade, help to high effective cutting, avoiding drilling offset. Specification: Material: Tungsten Carbide Cutting Diameter：3.0-3.9mm Application: Suitable for processing PCB, normal FR-4, CEM-3 boards, environmental protection board, SMT, CNC, molds, plastic,Circuit board, carbon fiber, composite board, and so on. Package Including: 1pc PCB Drill Bit 1