Description Features: Brand new and high quality Mortising Attachment for Drill Press: The adapter is suitable for bench and hand drills which are with a round diameter bearing that can be clamped. The round chuck diameter should be between 1.5 to 2.2 and the clamping bearing width should be no less than 0.48. Versatile 2 Use Design: Seamlessly switches between table drills and hand drills. Crafted for woodworking enthusiasts and professionals, furniture making, and other related industry. Good Material: Crafted from galvanized material, this adapter offer superior durability and corrosion resistance compared to iron. Perfect for professionals or enthusiasts in various industry. Easy Installation: It is easy to install and remove with the help of our provided installation manual in the package. Specifications: Material: 201 stainless steel Length: 15.5cm Note: Square hole drill bit and electric drill are not included in the package. Precisions Guaranteed: Designed for accuracy, our adapter ensures smooth drilling whether on board edges or round stock. Package includes: 1x Square Hole Drill Bit Adapter