Bridco Twisted Shackle is available in 3 sizes (see table below) and is designed with a 90 degree twist at the top of the D so it is at right angles to the pin. Twisted shackles are very useful and can be used to fix two objects which are at right angles to each other. Twisted shackles have a structural advantage compared to standard D shackles. They are secured by hand tensioning the pin. The Twisted Shackle is stainless steel and is often used in the marine industry as well as the mining, oil & gas and construction sectors.