The tong lifts and holds the ingots. They can be mechanical or electro-hydraulic. With the tong on the ingot, the latch is rotated 90 ° and the arms open. As soon as the tong starts to rise, the ingot is clamped between its inner and outer jaws. The tongs work mechanically during the opening phase. During the closing step, a roller fed by a mini power pack applies a pressure to the joints that allows for a soft closing. They can be considered for all industrial applications in any environment, they are commonly used in steelwork, rolling mills and port.