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The PRO-SOURCE 05166 is a single spiral nylon bristle brush designed for light-duty cleaning, deburring, and surface preparation in tight or tube-shaped passages. The brush head measures 1 inch in length with a 1/8 inch diameter, and the overall assembly reaches 4 inches in length. A stainless steel shank with a 0.051 inch diameter provides rigid support for drill-mounted or hand-tool applications. Nylon filaments at 0.003 inch diameter deliver controlled, non-aggressive scrubbing action suited for softer base materials or applications where metal wire would cause damage. Machinists, maintenance technicians, and trade professionals use this style of tube brush for bore cleaning, port maintenance, and detail work.
This brush is well suited for cleaning small-diameter bores, ports, fittings, and threaded passages across HVAC, plumbing, and general industrial maintenance applications. Its compact 1/8 inch brush diameter allows access to narrow passages where larger brushes will not fit. The nylon fill resists corrosion and chemical degradation, making it a reliable option in wet or chemically active service environments. The single spiral construction distributes filament contact evenly around the bore wall for consistent cleaning coverage with each pass.
Designed as an OEM-style replacement and general-use tube brush suitable for small-bore cleaning applications in HVAC, plumbing, and industrial maintenance environments where a 1/8 inch diameter brush is required.
This brush is typically used by HVAC technicians, plumbers, and maintenance professionals for bore and port cleaning prior to fitting installation or system reassembly. Ensure the workpiece is depressurized and isolated from live systems before inserting the brush into any port or passage. Mount the shank securely in a drill chuck or use by hand as the application requires. Avoid exceeding the rated filament flex range by forcing the brush into passages significantly smaller than the brush diameter.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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