NEW BLUEROCK DIAMOND Z-1 8″ CORE DRILL HIGH OUTPUT CONCRETE CORING DRILL. Specifications: Max Drilling Diameter: 8″. Rated Voltage: 110V. Rated Frequency: 50-60Hz. Rated Input Power: 2400W. Speed: 750 RPM. Arbor size is 1 1/4″ 7UNC. Structure and Features: The drill is fitted with a safety clutch Adaptable water spigot for “wet” drilling. Drill color is red. 2 Wrenches, 3 hex wrenches, 2 spare brushes. Adjustable Top Bolt for Binding into Ceilings. Water Spigot for use with Standard Garden Hoses. This is a brand NEW 8″ portable coring drill with a stand. It’s a high quality high output unit. Let us know if you have any questions before or after purchase. Drill bit pictured is not included.