This G-clamp has a frame made of high quality cast iron. It has an opening capacity from 50mm to 200mm and a width from 30 to 83mm. This is an essential tool intended for sticking, assembling, clamping, welding or cutting elements. Ideal for wood or metal. It also has a sliding tommy bar handle which is easy to rotate in order to reduce hand fatigue during use. It offers higher clamping pressure, saves time and effort while greatly reducing hard work.