Suitable for drilling holes in jewelry, amber, beads, beeswax, resin, circuit boards, leather, wood, olive, walnut and more. Material:HSS (High-Speed Steel). Size:0.6mm/0.8mm/1mm/1.2mm/1.4mm/1.5mm/1.6mm/1.8mm/2.0mm/2.2mm(10pcs).
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