Shackles, to work as a connecting part between sling and anchor/lifting point, the safety and convenience are both the main care of end-user. For the applications that need frequent disassembly, a screw pin shackle will be suggested for quick and easy dismantling. For low-frequency applications, you can choose bolt-type shackles for more safety. No matter which one you chose, please remember to check the shackle pin has been well screwed before operation.