IAG Performance 11mm Head Stud Dowel Pin Install ToolSome people have a hard time installing the OEM size 11mm head stud dowels on their Subaru EJ engines. While not as tricky to install as the 14mm head stud dowels the 11mm dowels can be damaged when tapping them in place with a hammer. The IAG 11mm head stud dowel tool was created to support the inner dowel wall evenly as it is tapped in place on the short block deck surface. Each tool is CNC machined from aluminum and features a silver anodized