Reticulated double-headed hand drill Manual drilling drill Wenwan Woodworking Drilling hole puncher Double-headed lock(with 3 total 7 Diamond grinding needle))

Diamond grinding needle D needle 1.5mm 2mm For materials with high hardness :Agate/garnet/tourmaline/peridot/topaz/amethyst

Diamond grinding head round head 1.5 1.2 1.0 0.8 for Used for materials with low hardness:Pearl / Moonstone / Labradorite / Lapis Lazuli / Beeswax / Cinnabar

Diamond grinding head 1.2mm 2pcs for Polishing of silver wire/gold-coated wire/copper wire/aluminum wire end