Hitachi-Koki VTP18 RPM 1050/1900 640W Impact Drill comes with a double insulated casing. This helps to reduce overheating, which in turn makes the impact drill durable. It is an 18 mm impact drill and runs with variable speed. Therefore users have the option of adjusting the speed according to their requirements. Also, it has been designed with a 13 mm keyed chuck that contributes to placing the drill in the exact position. This ensures work accuracy and precision.    Hitachi is a world-famous Japanese multinational company headquartered in Tokyo, Japan. Its range of products is quite wide, from IT to infrastructure. Hitachi – Koki VTP18 RPM 1050/1900 640W Impact Drill requires an input power of 640 watts and is capable of producing 17800 to 28600 blows per minute.    FAQs   Q1. How much is the steel drilling diameter? A1. The steel drilling diameter is 10 mm.    Q2. How much is the voltage requirement of the drilling machine? A2. The voltage requirement of this drilling machine is 220 V to 240 V.    Q3. What is the frequency of the machine? A3. The frequency of this drilling machine is 50 Hz.