Specification Brand : Miriam Song BulletPoint1 : [PREMIUM ALUMINUM MATERIAL] Crafted from long-lasting aluminum, this drill adapter is wear safe, robust, and long-lasting for superior durability in woodworking projects. BulletPoint2 : [EFFICIENT AND CONVENIENT] Professional woodworking tool that opens square holes in seconds, enhancing efficiency and becoming a trustworthy ally for woodworkers. BulletPoint3 : [UNIVERSAL DESIGN] Compatible with 38-43mm electric drill chucks, designed for accurate and smooth drilling with a 19mm clamping diameter. BulletPoint4 : [EASY TO USE] User-friendly design allows for quick installation and removal, even beginners can easily master it for seamless woodworking projects. BulletPoint5 : [WIDE APPLICATION] Suitable for most hand drills, excluding rechargeable drills and table drills, Ideal for making secure mortise and tenon joints. BulletPoint6 : Convenient to use and with good performance Color : Silver ExternallyAssignedProductIdentifier : 7627592906492 IncludedComponents : Adapter ItemName : Square Hole Drill Bit Adapter, Aluminum Alloy Square Hole Drill Fixing Bracket, 19mm Diameter for 38 to 43mm Drill Chucks ItemPackageDimensions_Height : 6 centimeters ItemPackageDimensions_Length : 17 centimeters ItemPackageDimensions_Width : 7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : drill-adapters Manufacturer : MIRIAM SONG Material : Metal ModelName : Saskatem6ypao5z79 ModelNumber : MIRIAM SONGemy6ckgup0 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : MIRIAM SONGemy6ckgup0 PowerSourceType : AC/DC ProductDescription : Item Type: Squarehole Drill Bit Adapter Material: Aluminum Size: Approx. 53 x 53 x 150mm / 2.09 x 2.09 x 5.91in Features: Premium Material: The square hole drill guide is made of premium aluminum, wear safe, high hardness, long service life, and high durability. Efficient and Convenient: A professional woodworking tool, the square hole drill adapter can help open square holes in a few seconds, greatly improving woodworking efficiency, and is a handy tool for woodworkers. Easy to Use: It's easy to open square holes with this tool. You can quickly install or disassemble it yourself, fast and convenient, even beginners can easily get started with it. Universal Design: The square hole drill guide is designed for compatibility with 38 to 43mm electric drill chucks, with a clamping diameter of 19mm, helping ensure accurate and smoothly drilling. Wide Application: Professional woodworking tool, suitable for most hand drills, except for rechargeable drills (lithium series) and table drills. It is an accuracy square hole drilling tool suitable for making mortise and tenon joints for secure connections.