Description
• 【Materials】20 pieces diamond drill bits are Made of premium diamond particles and alloy,
• 【Details】Includes 5 different shapes: 1.5mm cone, 3.0mm cone, 1mm cylinder, 2mm cylinder and 3mm cylinder
• 【Sizes】Shank diameter: 3mm(1/8inch), Grinding head length: 30mm, Total lenght : 70mm
• 【Application】Suitable for drilling ,expanding hole on stone,glass,ceramics,jewelry etc
• 【Warm prompt】For long-lasting use, please use a lubricant when using all diamond coated tools
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