Drill Press Milling Attachment Square Hole Drill Bit Adapter for Benchtop Drill Press Hand Drill Clamps in diameters ranging from 38 to 55 mm/1.5 to 2.2 inches, making it easy to install and use. It's the ultimate solution for increasing the versatility of bench and hand drills.(Please note that it is only suitable for benchtop drill presses and hand drills with clamps, not suitable for all products)Dual-purpose support stand: The square hole drill bit adapter is suitable for bench drills and hand drills. Square hole drill bit adapter is suitable for woodworking, furniture making and other related industries.Bench drill tenon accessories: The tenon converter is easy to install and remove, you can quickly install or remove it yourself, saving time and effort.High-quality materials: The square hole drill fixing bracket is made of all-steel casting, which is strong and durable. If you're looking for a versatile, efficient way to quickly install or remove your drill accessories, the Square Hole Drill Adapter is the perfect choice!Note: If stored in a humid environment for a long time, it may cause surface rust, just wipe some protective oil to improve it.Efficient and precise: Precision design ensures the accuracy and smoothness of drilling operationspacking list: 1* Square hole drill fixing bracket (Note: Square hole drill and electric drill are not included in the package)