Easy to use
LCD with half inch tall numbers
Automatic power turn down after 10 minutes of inactivity
Requires a 9 volt battery that is not included
Low battery indicator
It accepts all accessory bits with 1/32 to 1/8 inch shanks. It allows you quickly and easily change accessory on rotary tool without changing collets, save time and highly improve your work efficiency. Not only suitable for rotary tool models 275, 285, 398; Also suitable for models 750, 770 and 781 Widely used on rotary tool models 4000, 400, 3000, 398, 300, 285, 275, 200, 100, 8220, 8200, 800, 780, 770, 7700, 750
The 54pc Rubber Abrasive Rotary Set is a complete hobby tool with assorted shape and grit pieces all for a 1/8″ Shank. This set comes with 80 grit, 240 grit, and 600 grit sets. The set also includes a storage container to keep all the tiny pieces secure and safe. This set is great for polishing ferrous metals, stones, glass, ceramic, and more. Be sure to have it with you during your next rotary project!