Flex Shaft Cables and Chain Knockers – The Tools I Actually Trust Every Day I’ve been clearing drains for years, and if you ask me what gets the job done, I’ll point to two things in my van: a solid flex shaft cable and a mean chain knocker. Most people just lump everything under drain cleaning cables, but once you’ve used the right tool on the right clog, you stop guessing and start grabbing the one that works. Read more:- https://www.tumblr.com/drainrehabsolution/801931959263805440/flex-shaft-cables-and-chain-knockers-the-tools-i?source=share