Sinter type fastigiate-handle drills: Use for drilling hard and brickle material, such as glass, ceramics etc.
烧结锥柄钻头：适用于玻璃、陶瓷等硬性材料的钻孔。
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Sinter type fastigiate-handle drills: Use for drilling hard and brickle material, such as glass, ceramics etc...
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