PlumbMaster Approved 90201 Super Force Drain Pump Plunger

The PlumbMaster Approved Super Force Drain Pump Plunger (90201) is a force cups & plungers product. Four added"es provides additional pressure to force out or pull-up most any obstruction. Bell shaped. Air compressed in the top
chamber is forced into a smaller
space in the lower chamber,
multiplying the power. Manufactured by PlumbMaster Approved for residential and commercial plumbing repair and maintenance applications.