Black+Decker Multievo Multi-Tool Hammer Drill Attachment Features + Benefits: - 10 Torque Settings For Perfect Screwdriving Into Variety Of Materials With Different Screw Sizes - 2 Speed Mechanical Gear Box Which Delivers High Torque In 1St And High Speed In 2Nd Gear - Hammer Action Allows You To Drill Into Concrete Or Masonry Uses: - Screwdriving - Drilling Into Masonry - Drilling Into Steel, Plastic & Wood Includes: - 10Mm Masonry Bit - 8Mm Masonry Bit Product Specifications: - Product Type: Multievo Attachment - Attachment Type: Hammer Drill Head - Weight: 0.7 Kg - Drilling Speed:0-450/0-1450 (With A 14.4V Unit) Rpm - Chuck Type: Two Sleeve - Chuck Size: 10.0 - Max. Drilling Capacity (Wood): 25 Mm - Max. Drilling Capacity (Steel): 10 Mm - Beats Per Minute: 21750 (With A 14.4V Unit) Bpm