The Dremel 4000-4/34 High Performance Variable Speed Rotary Tool Kit is a versatile and powerful corded electric tool that offers a wide range of speeds from 5000 to 35000 RPM. With 39 pieces included in the kit, this rotary tool by Dremel is perfect for various home and workshop projects. The 1/8 inch chuck size and keyed chuck type ensure a secure fit for your accessories, while the compact design weighing 1.3lbs makes it easy to handle. Whether you are cutting, sanding, or drilling, this rotary tool kit provides the performance and precision you need.