The Dosco 4" Rubber Drain Plunger is a robust and effective tool designed for removing blockages from drains. It features a strong rubber plunger head that creates powerful suction to dislodge obstructions. Equipped with a threaded ferrule, this plunger allows for easy and secure attachment of drain rods, providing extended reach and leverage for deeper blockages. This 4" version is ideal for a variety of standard drain sizes.