uxcell 4pcs Square Hole Drill Bit for Wood 1/2", 1/4", 3/8", 5/16" Hollow Chisel Mortiser Auger Spur Cutter Tool, High Carbon Steel for Woodworking Carpentry

Features:It will get double effect by matched use with mortise and tenon machine.The square hole punching needs to use electric drill, hammer and other tools.Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.The square chisel mortiser combines the cutting of a four-sided chisel with the action of a drill bit in the center. The bit clears out most of the material needs to be removed and the chisel ensures the edges are straight and clean.Great for drilling square holes in wood with a mortising machine or a mortising attachment. Fits all mortising machines and drill press attachments. Square hole drill is mainly used for woodworking aspects.Specifications:Material: High Carbon SteelChisel Side Width: 6.4mm / 1/4inch, 8mm / 5/16inch, 9.5mm / 3/8inch, 12.7mm / 1/2inchChisel Depth: 47mm, 51mm, 54mm, 75mmHolder Diameter: 19mmShank Diameter: 4.4mm, 5.8mm, 6.8mm, 9.8mmTotal Length: 160mm, 205mm, 210mmPackage Contents: 4 x Square Chisel BitHow to Use:A. Mark the position of the hole and use the hole drill to make a hole.B. After removing the core, use a square hole jacket to align the position of the hole.C. the square hole continuously and slowly and you can get the square hole.NOTE: 1.Installed in the square hole machine directly, supporting the use, you can drill a square hole (especially recommended).2.If bench drills or electric drills are used, they must be strictly executed according to the operation method. Otherwise they can only be processed into round holes and cannot be processed into square holes.

• 【SIZE】6.4mm / 1/4inch, 8mm / 5/16inch, 9.5 / 3/8inch, 12.7mm / 1/2inch square chisel width, 47mm, 51mm, 54mm, 75mm cutting depth, 160mm, 205mm, 210mm total length.
• 【TIP AND EDGE】The best-designed drilling point tip and 4 cutting corners enable fast drilling with small opening resistance, and penetrating into working pieces of wood in precise opening size very smoothly and fast.
• 【MATERIAL】Made of High-carbon steel, through heat processing, with high hardness (48-50 HRC) drill bits, and sharp-edged square chisel, durable and lasts long.
• 【ADVANTAGE】With long drill core and square chisel, easy to lock the hole on the wood, can reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs.
• 【OPERATION】Used with mortise and tenon machine with double effect, and electric drill, hammer and other tools is required for punching square hole in wood.