The DongCheng 500W Corded Drill Driver features a 500W high-power motor that can achieve sustainable and stable output with a maximum drilling diameter of 13mm on metal. Multi-speed step-less speed adjustment with precise control and more stable power transmission. One-key switch between forward and reverse, ensuring high efficiency. The self-locking switch design can easily cope with long-term continuous work. All-aluminum gearbox with a thickened headshell which is firm and stable.