CHE SURE-GRIP PLUG, 1.5 IN. CHERNE POLYPROPYLENE MATERIAL; 2.5 INCH PLUG/BALL LENGTH; MECHANICAL OPERATION TYPE; NATURAL RUBBER O-RING INCLUSIONS/FEATURES; TEST PLUG; 50 FOOT ALLOWABLE PRESSURE HEAD; 22 PSI ALLOWABLE TEST/BACK PRESSURE; 1-1/2 INCH PLUG/BALL DIAMETER; SURE-GRIP[R] BRAND