The small opening tool penetrates clogs to get water flowing. This drain opener tool is best used in 3 in. to 4 in. pipes. The steel construction and Rust Guard™ plating provides longer-lasting head attachments. This head attachment works with 5/8 in. & 3/4 in. drum cable designed for the Milwaukee® MX FUEL™ sewer drum machine (MFX500 and MXF501).