Hollow Chisel Tool

• Precise：Cutting surfaces and tips guarantee smooth, even cuts with astonishing efficiency. 
• Woodworking：Engineered solely for creating square holes in wood.

• Stainless Steel：Precision-ground and hard carbon steel provides robust performance and high efficiency.

• Swift and Simple：Utilize this set with compatible drills to achieve outstanding results quickly.

• Creative：Traditional chisels may only create round holes, requiring square holes to be manually shaped. With this set, you can effortlessly make accurate square holes with impressive efficiency.

• Adaptable：Works with almost any standard drill to create square holes (tenon and mortising machines) for various applications. 

Technical Details

• Material: HSS.
• Hardness: 56HRC.
• Clamping body diameters
  1/4 INCH (6.4MM)
  3/8 INCH (9.5MM)
  9/16 INCH (14MM)
  5/8 INCH (16MM)  
• Diameter of the central part: Total length: 19.5 cm / 7.68 inches; Diameter: 6.8 mm / 0.27 inches
• This square drill is not suitable for use with standard electric drills; square holes need a specialized square hole drilling machine (tenon and mortising machine). The tenon and mortising device drills the square hole by combining the central head and the outer tube.

What’s in the Box

• TYPE1: 1/4 INCH (6.4MM) + 3/8 INCH (9.5MM).
• TYPE2: 1/4 INCH (6.4MM) + 3/8 INCH (9.5MM) + 9/16 INCH (14MM).
• TYPE3: 1/4 INCH (6.4MM) + 3/8 INCH (9.5MM) + 9/16 INCH (14MM) + 5/8 INCH (16MM).