We provide a wide range of products to satisfy all houseware and supplies. We are dedicated to give everyone the very best houseware supplies for all home needs, with a focus on dependability, our client satisfaction and great quality. We provide high quality modern products to be enjoyed by many clients. Our aim is continuous improvement and user satisfaction through effective implementation and quality of our products. Features. The quick change 3/8 hex mandrel for a 3/8 drill, and is used for hole saw sizes 1 1/4 to 7 7/8. All mandrels come complete with a highspeed 1/4 pilot drill and are fully heat treated for long, trouble free life. Worn pilot drills are easily replaced. Retractable drive pins provide positive attachment to the hole saw. A mandrel is required for all hole saws. Go green and recycle this product. An exchangeable product and member of the green exchange system specifications. Product Material Steel. Tool Power Drill, Drill Press. Description Quick Change Mandrel. Shank 3/8. Weight 0.4 lbs