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The WILLIAMS COMFORT PRODUCTS JHW43603 is a mini tube cutter designed for cutting copper, aluminum, and thin-wall tubing in tight-access areas where full-size cutters cannot reach. With a cutting capacity of 1/8 inch to 5/8 inch and an overall length of 1.75 inches, this compact tool is built for confined spaces common in HVAC, plumbing, and refrigeration work. Stainless steel rollers and an enclosed feed screw keep the cutting action smooth and consistent, reducing burr formation and minimizing contamination during cuts.
The JHW43603 is suited for residential and light commercial HVAC and plumbing service work where access is restricted by framing, cabinetry, or mechanical equipment. It is commonly used when servicing evaporator coil line sets, compression fittings, or supply and drain lines in confined mechanical spaces. HVAC technicians, plumbers, and pipefitters reach for this cutter when a standard-size tool cannot be positioned correctly around the tubing.
Designed as an OEM-style hand tool for use with copper, aluminum, and thin-wall tubing in the 1/8 inch to 5/8 inch outside diameter range, typical of residential and light commercial HVAC and plumbing applications.
This tool is used by licensed HVAC technicians and plumbers during tubing service or replacement. Always isolate and depressurize the line being cut before beginning work, following applicable IFGC or IPC guidelines. Position the cutter wheel squarely on the tubing and advance the feed screw gradually to avoid deforming the tube wall. Deburr the cut end before making any flare or compression fitting connection.
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