The Ryobi RPD500-G 500W hammer drill is the most compact & lightest 500W drill in the DIY market. The 500w motor produces high performance & drilling capacity into wood, steel & masonry. The RPD500-G like professional drills has heat treated, ball bearing steel cut gears, increasing its durability. The 13mm keyless chuck allows a drilling of a variety of hole sizes allowing more choice of bits over a standard 10mm chuck.