Features: 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 38-55mm/1.5''-2.2'' and the clamping bearing width should be no less than 0.48". Versatile Double-Use Designs: Seamlessly switching between table drills and hand drills. Crafted for woodworking enthusiasts and professionals, furniture making, and other related industries. Quality Material: Crafted from robust all-steel casting, this drill press accessories ensures durability and sturdiness. Additionally, consider wiping it with protective oil when stored in humid conditions for prolonged product life. Easy Installation: It is easy to install and remove with the help of our provided installation manual in the package.【Note】Square hole drill bit and electric drill are not included in the package. Precise Guaranteed: Designed for accuracy, our adapter ensures smooth drilling whether on board edges or round stock. Specifications: Material:201Stainless Steel Length:Approx.15.5cm/6.1in for benchtop drill presses and hand drill clamp diameter ranging between 38 to 55mm/1.5 to 2.2inch; Package Includes: 1xDrill Bit Adapter note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.