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The WISS M3R is a compound-action aviation snip designed for cutting sheet metal and other flat stock up to 18-gauge carbon steel. The compound lever mechanism multiplies cutting force, reducing hand fatigue on extended jobs. Blades are constructed from wear-resistant molybdenum steel built to withstand the high pressures generated by repeated compound cutting cycles. Non-slip grips deliver consistent control through the cut. At 9.75 inches in length and 1 pound, the M3R balances reach and maneuverability on the sheet metal bench or in the field.
Aviation snips of this type are standard tools for HVAC sheet metal fabrication, duct fitting, roofing, and light metal trim work. The M3R is suited to both shop and field use where accurate cuts in flat or low-profile stock are required. The yellow grip color on aviation snips conventionally designates a straight-cut pattern, making the M3R appropriate for straight and gentle curved cuts across carbon steel sheet. Professionals in HVAC, roofing, and general sheet metal trades rely on this tool for repetitive cutting tasks where blade durability and grip control matter.
Designed for cutting low carbon rolled steel sheet up to 18-gauge, suitable for standard HVAC duct fabrication, sheet metal trim, and light roofing applications.
Aviation snips are a hand-tool application requiring no power source or code compliance, but proper PPE including cut-resistant gloves should be worn when handling cut sheet metal edges. Inspect blade alignment and pivot tension before use; loose pivots reduce cut accuracy and accelerate blade wear. Do not use snips to cut wire, hardened steel, or material exceeding the rated gauge capacity, as this will damage the blades and compound mechanism.
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