1. Blade is made of exceeding quality alloy, perfect sintering technology, sharp and long life expectancy. 2. The positioning is made of powder alloy die-casting, make use of curve design, good for chip removal and drill Special removeable strongback design makes drill easier. 3. Could be used for most handheld drill/wireless drill/table drill for wood products hole drilling with smooth hole.
Material: Forstner Drill Bit Diameter: 15mm/20mm/25mm/30mm/35m