MORTISE CONVERTER: Compact size, you can take this bench drill hole converter with you wherever you want to use it.The square tenon converter is small in size and easy to carry and use. DRILL PRESS STAND Square tenon machine converter with this tool, you can convert the bench drill to a square mortise machine.This tool is perfect for a variety of woodworking applications, from tenon to drilling to mortising and more. MORTISE AND TENON TOOLS: Joint mortiser bit, this bench drill hole accessory is made of metal , and can be utilized for a long time. The Woodworking tenon Machine is designed to deliver fast and accurate results, without sacrificing quality or precision. WIDE RANGE OF APPLICATION: This multifunctional tenon jointing attachment can transform drill press into a precise tenon jointing machine for woodworking work.Not only can it cut wooden tenons such as round,square and special square,but it can also be used for round recesses,internal grinding, metal drilling,etc. DRILL ATTACHMENTS: With screws, exquisite in workmanship, high performance and long service life. Mainly Used for Woodworking Aspects. Specification: Material: Stainless Steel Clamp Diameter: 38mm~55mm/1.5inch~2.2inch Size Chart: Square Hole Drill Fixed Bracket: 10cmx1.9cmx5.5cm/3.94inchx0.75inchx2.17inch Package Includes: Optional 1 Square Tenon Converter, 4 Screws or 1 Square Tenon Converter, 4 Screws, 1Thumb Screw Note: Please allow slightly errors due to manual measurement and different monitors.