The difference between the single J hook and the double row hook of the tensioner

The specifications and models of the tensioner can be distinguished according to the type of metal accessories, and the more common one is the division of single-row hook and double-row hook bolters. Although the appearance of the two seems to be the same, their use capabilities are almost the same., but it should be noted that there is no welding point on the double-row hook connected by the tensioner strap, while the hook part of the single-row hook has a welding point.resulting in losses and accidents.