ZVH1175 Features: * Professional internal pipe wrench * Internal pipe wrenches are designed to rescue HVAC and plumbing professionals from broken pipe threads, plugs and fittings * Machined, heat-treated cams grab on to broken pipe fragments that have become lodged inside other pipe * Hex-shaped bodies are made from alloy steel and can be used with open- or closed-ended wrenches * Professional series wrenches conform to government specifications for size and weight Dimensions: * Dimension: 3.75"" D