Ideal for long term applications, this CHERNE INDUSTRIES Aluminum Gripper plug with T-handle is ideal for use with concrete, clay, and SDR 26 and 35 pipe. Model has a heavy-duty aluminum body and can be used for sewer air pressure tests. The T-handle design eases installation and comes with a chemical-resistant neoprene O-ring for long life.Note: Always block plugs when conductingair tests. Consult manufacturer's safetyinstructions before installing product. Item: Pipe Plug w/Bypass Type: Mechanical Nominal Size: 6" Min. Dia.: 5.70" Max. Diameter: 6.30" Max. Back Pressure: 40 ft. of Head Material: Aluminum For Use In: Concrete And Clay Pipes