| Alloy fouredged crossdrill, sharping and longlasting, fast drilling, versatile and accurate hole punching. Sharping drilling edges, high toughness, abrasion resistance, high density hardness, and nice adaptability. Widened spiral texture, smooth chip removal, faster chip removal when operating and using. Hexagonal drill shank with high compatibility, suitable for lithium drill, electric drill, table drill and other power tools on the market. Features: Alloy fouredged crossdrill, sharping and longlasting, fast drilling, versatile and accurate hole punching. Sharping drilling edges, high toughness, abrasion resistance, high density hardness, and nice adaptability. Widened edges, smooth chip | |