Heavy duty shield anchor is 4-segment metal expansion fastener. It consists of slotted metal shield, cone nut and hex bolt. Tightening the bolt pulls the cone to expand the shield firmly against the hole wall. Suitable for solid concrete, solid brick and stone. Higher load capacity for medium & heavy duty fixing such as handrail, steel bracket and door frame. Pre-drilling required. Sizes M6~M20, length 40–200mm. Zinc plated or HDG optional.