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The WILLIAMS COMFORT PRODUCTS 1-170-10-3-0 is a 3-square (triangular) file measuring 10 inches in length with a smooth cut rating of 41 teeth per inch (TPI). This file is designed for precision filing work on internal angles, saw teeth, and tight corners where a flat or half-round file cannot reach. The triangular cross-section gives access to 60-degree angles and similar profiles. Tradespeople and maintenance technicians reach for this file when deburring metal, sharpening saw blades, or refining notches and slots during fabrication or repair work. At 0.529 pounds, it is lightweight enough for extended hand use without fatigue.
This 3-square file fits into general maintenance, HVAC sheet metal work, plumbing rough-in, and electrical trade applications where metal edges need to be dressed before fitting components. The smooth 41 TPI cut removes material slowly and precisely, making it well suited for finish filing on ferrous metals, brass, and similar materials. It is sold individually and is appropriate for both shop and field use.
Designed as a general-purpose 3-square hand file compatible with standard file handles accepting a tapered tang; suitable for use on ferrous metals, brass, and similar hard materials.
This hand file is used by HVAC technicians, plumbers, electricians, and fabricators for metal finishing and deburring tasks. Always secure the workpiece in a vise or clamp before filing to maintain control. Use an appropriate file handle over the tang to protect the hand during use. Inspect the file for cracks or damage before each use and replace if teeth are worn smooth or the body is cracked.
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