Flex Shaft T-Slide vs. Set Screw Chain knockers | Here's a little look at some of the differences between T-Slide and Set Screw Chain knockers for your sewer and drain cleaning needs.
Drain Rehab Solutions: Chain Knocker Service Kit
Ridgid T-216 Chain Knocker 63060 - Wardsflex
Chain knocker KS32 - 3 carbide chains - Ehle-HD development and sales company
Chain Knockers for Flexible-Shaft Machines - MyTana LLC
Easy Shopping - Drain Chain Knockers and Drill Heads