BLUEROCK TOOLS Model 4Z1 DUAL SPEED CORE DRILL HIGH OUTPUT CONCRETE CORING DRILL PACKAGE DEAL COMES WITH: 1 ", 2", 3", & 4" DIAMOND WET CORE BITS + 12L Water Reservoir Kit Specifications: Max Drilling Diameter: 4" Rated Voltage: 110V Rated Frequency: 50-60Hz Rated Input Power: 1500W Dual Speed: 2100rpm/950rpm Arbor size is 1-1/4" 7UNC Structure and Features: Two-gear rotary speed is designed for drilling different size holes. The drill is fitted with a safety clutch Top gear is for smaller drill bits 1"-2" Bottom gear is for larger drill bits 2"-4" 12L Portable Water Supply Reservoir Included Pressurized portable water feed system for wet core drilling – Ideal for wet core drilling where a water source is unavailable. 12 Liter / 3.17 Gallon Water Can – Compact, lightweight, and easy to transport. Direct Fit with Bluerock Core Drills – Includes a brass male-threaded adapter that fits all Bluerock water hose systems. 10ft Reinforced Water Feed Hose – Durable and kink-resistant for consistent water flow. Locking handle, pressure relief valve, adjustable shoulder carry strap. 8"x8"x27"