Kobalt Medium Drain Rubber Bladder

For tough clogs, both DIYers and Pro customers can use this drain bladder along with a garden hose. The bladder expands in the drain which forces water through the clog, clearing it from your pipes. Lowe's offers three sizes of bladders: mall (for 1in to 2in drains), medium (for 1.5in to 3in drains), and large (for 4in to 6in drains).