Product description ​ ​ ​Features: ​ ​The use of advanced technology manufacturing, high-quality materials, long service time. ​ ​Drill holes neat, smooth, no broken edge, will not produce tremor phenomenon. ​ ​Incision resistance is small, improve the drilling speed, chip removal easily. ​ ​Can be used for a variety of wood, wood products, plastics, plywood and other materials openings. ​ ​Easy to install, easy to use, only need to be installed in the ordinary hand drill can be used. ​ ​Work noise is small. ​ ​ ​ ​Type: Forstner Drill Bit ​ ​Material:60#High Carbon Steel ​ ​Blade type: arc edge ​ ​Size: 6mm(1/4''), 10mm(2/5''), 12mm(1/2''), 15mm(19/32''), 16mm(5/8''), 18mm(23/32''), 19mm(3/4''),

20mm(25/32''), 22mm(7/8''), 25mm(1''), 28mm(1-3/32''), 30mm(1-3/16''), 32mm(1-1/4''), 35mm(1-3/8''),

38mm(1-1/2''), 40mm(1-9/16''), 41mm(1-5/8''), 45mm(1-25/32''), 48mm(1-7/8''), 50mm(1-31/32''), 51mm(2''), 54mm(2-1/8'') ​ ​Shank: 8mm/9mm (3/8")Round Shank ​ ​ ​Packing Included : ​ ​1 x Drill Bit