Complete Set: This package includes 20 twist-style diamond drill bits in 10 different sizes: 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, and 4.0 mm. Suitable for various precision tasks in daily and professional use. (Drill machine is not included.)

Efficient Performance: These micro diamond drill bits feature sharp, pointed tips designed for faster and more accurate drilling. They help improve efficiency, reducing effort and saving time during operation.

Wide Application: Designed with precise sizing to handle multiple tasks, these bits are suitable for materials such as jade, soft metals, agate, gemstones, pearls, pendants, and small stones. Note: Due to their fine structure, avoid using on very hard materials or applying excessive force to prevent damage.

Grooved Design: Each bit includes a groove structure that helps remove debris during drilling and reduces heat buildup. This feature supports smoother operation and better overall performance.

Durable Material: Made from high-quality diamond-coated material, these drill bits are carefully processed for strength and accuracy. They resist rust and deformation, ensuring long-lasting and reliable use.