Specifications: Max Drilling Diameter: 10″. Rated Voltage: 110V. Rated Frequency: 50-60Hz. Rated Input Power: 2600W. CE Certificate. Dual Speed: 460rpm/900rpm. Structure and Features: Two-gear rotary speed is designed for drilling different size holes. Top gear is for small/medium drill bits. Bottom gear is for larger drill bits. The drill is fitted with an outer regulating safety clutch. Has an overload protection switch to protect the machine and user. Double insulation. Adaptable water spigot for “wet” drilling. This is a heavy duty drill with high output. NOTE: Core bit pictured does not come with the purchase.