Gong Paidang 6542 High-Speed Steel Twist Drill Bit Set 5pcs 9mm High Hardness Stainless Steel Hand Drill Hole Punch

Diameter range

1 mm to 14 mm

(Full size chart available upon request)

Use cooling fluid during drilling for better performance and longer tool life.

Avoid excessive force and sudden pressure to prevent drill breakage, especially with smaller diameters.

Ensure drill bit is firmly fixed and workpiece is stable to avoid vibration.

Clean chips regularly when drilling thick materials to maintain efficiency.

Regularly inspect and maintain drill bit sharpness and cleanliness.

Always wear safety equipment such as protective glasses and gloves during operation.

Ideal for fast and precise drilling in stainless steel, cast iron, titanium alloys, galvanized pipes, and other hard materials.

Suitable for professional and industrial use requiring durable and high-performance drill bits.