CB50S

Soft sponge balls like this one are well suited for clearing residue, sediment, and general buildup from pipe interiors during cleanout work. The soft material conforms enough to scrub inner pipe walls without being abrasive, which makes it useful for routine maintenance passes where you need thorough coverage without damaging the line.

The CB50S is a 5-inch cleanout sponge ball, so it's designed for use with 5-inch diameter pipes.