مثقب حفر برؤوس مصقولة متناهية الصغر 1.6 ملم مثقب كربوندوم اف جي مثقب ماسي

Shank diameter: 1.6mm.
High hardness,high strength, wear resistance, no rusty.
Natural diamond powder, high hardness, can ensure the sharpness of the needle.
Excellent for fine detail work, cutting, engraving, carving, touch-up and finishing,engraving, and shaping with precision and detail.
High temperature steam sterilization before use.