Maximum Diameter Masonry: 16 mm. Suitable for All DIY Drilling Tasks in Various Materials Such as Plastic, Wood, Metal and Masonry for Screwdriving Purposes. Reversing Brush System Delivers Good Screwdriving Performance. Adjustable Variable Speed Makes the Drill Very Suitable for Use in a Manual Drill Press. New 710 W AC Motor Design Delivers Improved Power and Torque Performance for All DIY Tasks. Metal Gear Case Gives Increased Stability and therefore Improves Durability and Tool Life. Secondary Handle to Provide Additional Control and Lock on Button for Greater Comfort.