Copper Tube Expander Drill Bit Set 12 Pcs, 1/4 to 7/8 Inch for HVAC

<p>This 12-piece copper tube expander set contains drill-bit style expanders for flaring the end of copper pipe so two tubes can be joined without leaks. The set includes six sizes, 1/4, 3/8, 1/2, 5/8, 3/4 and 7/8 inch, with two of each size. Each bit has a 1/4 inch hex shank that fits a standard drill or impact drill, and the bits are made of ball bearing steel for hardness and wear resistance.</p><ul><li>12 bits total: two each of 1/4, 3/8, 1/2, 5/8, 3/4 and 7/8 inch</li><li>Head widths: 6.3 mm, 9.5 mm, 12.7 mm, 15.9 mm, 19 mm and 21.8 mm</li><li>Overall lengths: 44.6 mm for 1/4 and 3/8 inch, 49.3 mm for 1/2 and 5/8 inch, 53.9 mm for 3/4 inch and 62.5 mm for 7/8 inch</li><li>1/4 inch hex shank for drills and impact drills</li><li>Run the drill slowly, wear gloves and goggles, and clamp the fitting before expanding</li></ul><p>Useful for air conditioner and refrigerator service, and the set stores easily in a toolbox. Each unit is one 12-piece set of copper tube expander drill bits.</p>

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