42 inch Long Flexible Drive Shaft Can Run Up To 35,000 RPM at no load COMFORTABLE GRIP SUITABLE for detail work, cutting, engraving, carving, touch-up, drilling and finishing. GREAT for Jewelry Design, Lapidary Work, Hobby, Crafting, Modeling, Repairs, Drilling and Shaping Gemstones, Seashells, Sea Glass QUICK - EASY - SECURE CONNECTION- Keyless Chuck and 1/8 inch Universal Collet ALLEN WRENCH Included Dremel, Wen, Ryobi have registered trademarks of their owners. This is a compatible product.