Cherne - Hub-Fit Gripper Plug
From Mechanical Plugs
Hub-Fit Gripper Plug Features: Ideal for use in hub fittings and in bell-end pipe. Pressure rated for conducting DWV tests. Made with glass-reinforced ABS plastic. Yellow color for greater visibility in pipe. Natural rubber o-ring for positive seal. Galvanized carriage bolt to prevent corrosion. Easy-to-install, extra large zinc wing nut – won't rust.