
Advanced manufacturing technology and durable material - Made of tungsten steel and heat treated, the blade features high precision, smooth cutting process, good impact resistance and good toughness. High quality - low cutting resistance, improves opening speed, easy chipping and no shaking. The perforation is clean, smooth, no broken edges. 16pcs include 16 different drilling diameters: 15mm/16mm/17mm/18mm/19mm/20mm/21mm/22mm/23mm/24mm/25mm/26mm/28mm/30mm/32mm/35mm. Wide range of applications - All wood and wood products, plastics, plywood and other materials needed for perforation, suitable for industrial hinge installation, wood processing and maintenance, model making, installation of ball doors, drawers and more. Designed for durability and long service life, ensures a smooth, fine finish. Mengshen Forstner Drill Bit - Providing a handheld and portable woodworking drilling machine, used for installing the ball tip of door drawers, drawers, etc. Perforation on wood, plastic, wood,