152mm diameter dry diamond core capacity. 13mm steel chuck. Percussion action for drilling pilot hole. Torque limiter to prevent operator injury if the core bit snags. Register online for 3 year guarantee. Includes: chuck key, side handle and case MAKITA 8406 Dry Diamond Core Drill Features. 152mm Diameter Dry Diamond Core Capacity. Heavy duty construction – ideal for site work. Percussion action for drilling pilot hole. Rotary action for dry diamond core drilling. Torque limiter to prevent operator injury if the core bit snags. Excellent for plumbers, electricians, general contractors. Carry Case Specifications. Max dry diamond core 152 mm. Max. In steel 13 mm. Max. In masonry 20 mm (Percussion Action). Max. In wood 30 mm. No Load Speed 0 – 1500 rpm. Blows per minute 0-22500 bpm. Input wattage 850 w. Vibration: Hammer Drilling 9.5 m/sec². Vibration: Drilling 2.5 m/sec². Noise sound pressure 94 dB(A). Noise sound power 105 dB(A). Net weight 3.7 kg.