General description The Square Hole Drill Bit Adapter is designed to enhance the versatility of your benchtop drill presses and hand drills. It is perfect for woodworking, furniture making, and other related industries, allowing for effortless installation and use. Technical specifications Compatible with drill clamp diameters ranging from 38 to 55mm (1.5 to 2.2 inches) Material: Stainless steel Color: Silver Measurement allowed error: +/- 1-3cm Installation Easy to install and remove Can be quickly installed or removed by the user Usage Ideal for enhancing the functionality of table drills and hand drills Ensures accurate and smooth drilling operations Other information Note: Square hole drill and electric drill are not included in the package To prevent rusting, store in a dry environment and apply protective oil if necessary