8-122 Insulated Swivels, with Half Link & Coupling Self Locking Hook.绝缘旋转钩（带半环和连接型自锁钩）

8-124 Insulated Swivels, with Open Master Link & Coupling Self Locking Hook绝缘旋转钩（带开式吊环和自锁钩）

8-125 Insulated Swivels, with Open Master Link With Sling Hook.绝缘旋转钩（带开式吊环和吊钩）

Design factor 4:1 安全荷重设计系数 4:1 测试通过 

Inpidually tested to resist 1500 Volts insulated with Test Certificate.

Design for protection of overhead crane during welding operations on suspended loads.

绝缘旋转环（Insulaed Swivels），能防御1500伏高压电，带检测证书，设计用于在对悬空货物进行电焊操作时，保护高空起重机。