Square Tenon Drill Mortise And Tenon Drilling Woodworking Square Hole Drill Feature: Materials: these square hole drills are made of high speed steel, heat treated, with high hardness bits and compatible with sharp square chisels, with long service life High efficiency: the woodworking bit is equipped with a long core and square chisel, which is easy to lock the hole on the wood, so as to obtain different mortar quickly. And it's labor saving. Size: 4 different sizes are available for you to choose. Square hole, 1 / 4 inch (6.4 mm), 5 / 16 inch (8 mm), 3 / 8 inch (9.5 mm), 1 / 2 inch (12.7 mm). See the picture for more details, it's more intuitive. The drill bit is easy to maintain and can be protected by most of these plastic boxes. Scope of application: suitable for drilling square holes in wood with mortise machine or mortise accessories. It is also suitable for bench drilling machine. It is recommended to use wood with density board, pressing board and plastic wood. Note: these square drills are not suitable for any hand drill. Make sure that the wood floor is at a 90 degree angle to the drill bit. Note: it is not recommended to use in bearing wall, stainless steel plate and tempered glass. Please pay attention to safety when using. Package Content: 1 x drilling tool Handmade equipment Multi-color, Iron 3d Multi Angle,Woodworking Marking Gauge Set,Welding Table,U Angles,5 in 1 Sliding Gauge,Woodworking Protractor,Angle Gauge 3/8 Drive,Straight Edge,1 24000 Map Protractor,3-d Multi Angle Measuring,1 Protractor,360 Protractor Clear,360 Protractor for Geometry,The Cutting Edge,Woodworking Center Gauge,Welding Table Plate,Angle Gauge Automotive,360 Protractor,Tile Corner Trim Aluminum,3d Multi Angle Measuring,Stair Tread Template Set,Trade Show Lighting,Angle Gauge 3/8,Angle Gauge 3/4,3d Multi Angle Measuring in Inches,6 Folding Multi Angle Measuring,Swing Arm Protractor Large,Woodworking T,Vintage Protractor Set,Angle Gauge 1/2,360 Protractor Small,Woodworking Angle,Tile Corner Trim,T Squares for Drawing 36,Swing Arm Protractor Set,360 Protractor with Swing Arm,T Molding,Swing Arm Protractor Clear,Survey Equipment,Vintage Protractors,Welding Magnets Angle,360 Protractor Circle,Angle Set,Angles90 2 Grips,Angular Grinder,Carpentry Squares,Center Finding 6,Chisel Angle Gauge,Lip Edge 5x24,Angle Duplicator,Protractors as Drawing Instruments,Marking Gauge Double Head,Center Finding Woodworking,Adjustable Angle Plate,Aluminum Corner Trim 1/2,Aluminum Pencil Trim,Angle Gauge,Angle Gauge Scale,Angle Carpenter,Protractor Set for Kids,Protractor 1 Pole 40 Amp,Baseboard Molding Trim,Multi Angle Measuring Aluminum,Carpenter Squares for Woodworking,Clear Protractor,Lighting Measure,Clear Protractor with Arm,Adjustable Angle,Aluminum Angle 2x2x1/16,Aluminum Corner Trim 1/4" X 1/2,Protractors Classroom Set,Angle Clear,Angle Toolbox,Pro 3600 Digital Protractor,Badder Shaker,Bisected Angle,Carpentry And Building Construction,Map Protractor,Clear Protractor Sheets,Aluminum Straight Edge Set,Shop Storage,Angle Flange,Angle Flange Angle Ring,Right Angle 6 Inches,Right Angle,Protractors Class Set,Angle Extendable,Pro Woodworking Set,Power Pen Math Addition,Perfect Point Angle,Baseboard Corner Molding Trim,Baseboard Molding Led,Baseboard Trim,Right Angle Sewing,Angle Drawing,Angle for Drawing,Protractors,Aluminum Angle 2x2 6ft,Protractor for Geometry,Aluminum Corner Molding,Protractor,Angle Woodworking,Angles 90 Training,Protractor Set,Multi Function Leveling,Brass Protractor,Measure Digital,Long for Woodworking,Measuring Scale for Kids,Clear Protractor for Kids,Measure Wheel Digital,Math Pro Materials: these square hole drills are made of high speed steel, heat treated, with high hardness bits and compatible with sharp square chisels, with long service life High efficiency: the woodworking bit is equipped with a long core and square chisel, which is easy to lock the hole on the wood, so as to obtain different mortar quickly. And it's labor saving.