Milwaukee 4" Carbide Chain Knocker for 5/16" Chain Snake Cable

DOMINATE CAST IRON SCALE WITH WALL-TO-WALL DESCALING POWER

When you're staring down a 4-inch cast iron stack choked with decades of scale and hard mineral deposits, a standard auger won't restore the flow your customer expects. This 4” Carbide Chain Knocker is engineered for the high-torque, high-speed demands of the M18 FUEL Chain Snake, delivering an aggressive wall-to-wall clean that chews through scale, grease, and heavy blockages. The carbide-tipped tabs provide the necessary bite for hard-walled pipes, ensuring you leave the line as clear as the day it was installed. Built to survive the corrosive reality of wet-work, the stainless steel set screws and RUST GUARD plating ensure your accessory remains field-ready and won't seize up when you need to swap heads in a tight crawlspace.

• / High-performance carbide tabs deliver aggressive descaling in cast iron and other hard-walled pipe materials.
• / Optimized for 4" lines to provide a comprehensive wall-to-wall clean that removes grease and tough blockages.
• / Stainless steel set screws offer superior corrosion resistance in harsh, wet sewer environments.
• / RUST GUARD™ plating prevents oxidation, extending the service life of the knocker through countless service calls.
• / Flexible design allows for smooth navigation through tees and bends without sacrificing cleaning power.

WHAT'S IN THE BOX

(1) 4" Carbide Chain Knocker for 5/16" Chain Snake Cable (48-53-3027), (1) Hex Key