ITEM NAME:M8x40mm 1.25mm Threaded Rod Stud Round Connector Nut Stainless Steel Description: M8X40mm pitch 1.25mm Threaded sleeve rod bar stud round connector stainless steel Long nut Connectors are used to connect two threaded parts together Outside Diameter: 12mm No installation Tool & No instruction is Included, Professional Installation is Recommended Each item has been tested before.M8X40mm pitch 1.25mm Threaded sleeve rod bar stud round connector stainless steel Long nut. 1x M8X40mm 1.25mm Threaded Sleeve Nut. Connectors are used to connect two threaded parts together.