DescriptionVacuum brazed diamond drill kit-6 pcs1x20mmxM14 1x35mmxM14 1x40mmxM14 1x45mmxM14 1x50mmxM14 1x60mmxM141) For stone, concrete, brick, tile, glass, fiberglass, etc2) Perfect safety, excellent fast, high efficiency and complicated shape3) Rather longer life than the electroplated tools.4) Various diamond grain and grade to meet various application-cutting, drilling, grinding.5) Environment friendly6)Install the core drill in hand electric drill, drill holes with Dry or wet drilling.
