The Dongcheng RTC DPB 20C is a robust, corded electric impact wrench featuring a fixed 12.7 × 12.7 mm (½″) square drive head—designed for heavy‑duty fastening in industrial, automotive, and construction applications. Powered by a 340 W motor, it delivers up to 294 NM of tightening torque with a no‑load speed of 1 700 rpm and an impact rate of 2 000 per minute, compatible with bolt sizes ranging from M12 to M20. Housed in a double‑insulated casing and built with a metal gearbox, it incorporates a rubber‑covered front and back‑and‑forth rocker switch for forward/reverse, enhancing grip and user control. The tool weighs approximately 2.7 – 3.2 kg, with an overall footprint of around 20 × 5 × 20 cm—its head width corresponds to 50.8 mm, and its body thickness close to 0.6 cm—thus offering a compact yet industrial‑strength form factor. Accompanied by essentials like a socket pin, O‑ring, carbon brush, and plastic carry case, the DPB 20C delivers reliable performance straight out of the box.