Drill adapter holder do square holes, durable do table drills with 4 screws Description: Material: Fixed square hole drill chuck is made of stainless steel, wearresistant, high hardness, durable and . Assembly: Adapter with square hole fits do table and hand drill clamps with diameter from 38 mm do 55 mm/1,5 do 2,2 inches. Note: Adapter with square hole, products do not include ani square hole drill electric drill, please use do bracket of table drill and hand drill. Wide Application: The square hole adapter holder is designed do furniture production, ensuring accurate and smooth drilling. Specification: Material: stal stainless Clamp Diameter: 38mm 55mm/1.5 inch 2.2 inch The package includes: Optional: 1 adapter with square hole Or 1 adapter with square hole 4 screws Or 1 adapter with square hole 4 screws 1 nut