0.9mm Standard Mail 2.3mm Core 4-Piece Diamond Drill Bit Set High Precision Tip

0.9mm Standard Mail 2.3mm Shank Diameter 4-Piece Diamond Drill Bit Set - High Precision Tip
Product Description ★Length: 42mm ★Shank Diameter: 2.3mm ★Drilling Depth: 3.5mm ★Quantity: 4 pieces
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Ideal for hard materials such as metal, glass, gemstones, pearls, and tiles.
We prepared these because customers who purchased mini-routers and micro-drill bits were having trouble drilling hard materials. They couldn't center the drill bit, couldn't use a center punch like on iron, and the drill bit tip would jump, preventing them from drilling holes.
These can also be used for centering and engraving hard materials like glass, tiles, gemstones, and precious stones. The short needle-like tip reduces vibration, positively impacting processing accuracy.
Use these bits to establish the center before using drill bits suitable for your material.
Diamond drill bits with extremely fine tips and straight points have a low pass rate during manufacturing, making highly accurate ones very expensive tools. However, by using water to prevent overheating, you can use them for a long time.