RIDGID 4 in (100 mm) FlexShaft Chain Knocker, 3-Chain, For Use with Flexshaft K9-204 Drain Cleaning Machine

This chain knocker is designed for use with the K9-204 FlexShaft Drain Cleaning Machine (not included) and provides wall-to-wall cleaning in 4 in. pipes. The chain knocker expands to a pipes inside diameter to break up blockages. This chain knocker fits 5/16 in. cable and is equipped with three chains. The chain knocker is ideal for all pipe types, including for soft blockages and grease. Not recommended within ceramic, glass or porcelain pipes.

• For use with K9-204 FlexShaft Drain Cleaning Machine
• Provides wall-to-wall cleaning in 4 in. pipes
• Expands to a pipe's inside diameter to break up blockages