Feature: - Made of high-quality cast iron, durable.  - Exquisite workmanship, for efficient performance and long life.  - Mainly used for woodworking aspects.    Description: - The drill bit of this set of square tenoning machine attachment can only be used to drill low-hardness wood. This simple device is only for DIY use, it cannot be used as a professional square hole machine, and hardwood can not be punched.  - The product is used with bench drills, the package does not include bench drills.  - The distance between the drill chuck and the worktable cannot be less than 30CM.  - Tenon Knife Handle Diameter must be 19MM.     Specification: Product Name:DIY Square Tenon Machine Accessories Set;  Material:Cast Iron;  Bracket length:180MM;  Bracket internal distance:120MM;  Chuck Diameter:65MM;  Tenon Knife Handle Diameter:19MM;  Reducer Sleeve:(65-60MM)/(65-58MM)/(65-55MM)/(65-53MM);  Drill size:1/4 Inch, 3/8 Inch, 5/8 Inch, 1/2 Inch;  Plastic box weight:6KG;     Package included: 1 Pc xLocator;  1 Pc xFixed seat;  1 Pc xPress block;  1 Pc xAllen wrench;  1 Pc xBacking;  1 Pc xConnecting rod;  2 Pcs xFixed screw;  2 Pcs xSide positioning rod;  4 Pcs xFixed handle;  4 Pcs xTenon drill;  4 Pcs xReducer Sleeve;  1 Pc xMannul