4pc Heavy Duty Shield Anchor Description 1. Product name: 4pc heavy duty shield anchors, 4pc shield anchor 2. Material: carbon steel, stainless steel 3. Finish treatment: white zinc plated, yellow zinc plated. 4. Size: M6—M20 Available with Body, Open Eye Hook, Thread Rod, Closed Eye Hook The 4 pc Heavy Duty Shield Anchor is the most popular torque controlled Expanding Shield anchor, combining ease of installation with good load carrying capacity. It’s the ideal purpose anchor bolt, having higher degree of expansion than other types of anchor bolt and excellent tolerance to variations in hole size. The collapsible ferrule ensures positive clamping force is transmitted to the fixture. The expansion shield anchor bolt is available with Body, Open Eye Hook, Thread Rod, and And Closed Eye Hook.