Our Made in the USA safety bump plugs is an alternative choice to the traditional cam and groove plugs, providing a comfortable handle for the driver's hand and a "bump" that extends beyond the hose fittings and ears, protecting them from damage. Safety plugs are available in two, three and four inch, male and female models, in a hazardous / petroleum configuration with an anti-static additive, a food grade with a food grade certified composite and a septic configuration, all are made from a glass filled composite.