About this item 【What You Will Get】: This air conditioning copper pipe flaring tool set contains 8 tools: 6 Pcs different size drill bits, 1 Pc mini copper pipe cutter, 1 Pc deburring tool, complete set of tools, very suitable for air conditioning copper pipe flaring operation during HVAC installation, no complicated learning, easy to use. 【Drill size】: 6 different sizes of hvac tools clearance, including 1/4'', 3/8'', 1/2'', 5/8'', 3/4'', 7/8''; Handle diameter: 7 mm (hexagonal handle), pipe reaming tool is a necessary accessory for repairing air conditioners. 【Mini copper pipe cutter】: 3-28mm (1/8" - 1 1/8") copper pipe cutter can cut copper pipe, steel pipe, stainless steel pipe, aluminum pipe PVC and iron. Note: Cutting PVC pipe is not recommended because it is much more difficult to cut. 【Deburring Tool】: The blade is mounted on the handle can rotate 360 degrees, this spin swaging tool hvac helps to clean the top of the pipe or tube, it has a compact size and can easily be carried anywhere. 【Why Do You Need HVAC Tools Drill Bit Set】: When connecting swaging tool kit, the soft copper pipes are expanded by the rotation of the drill bit, so that the two copper pipes are connected without leakage. When used in combination with electric drill and impact drill, it works more efficiently than the round head reaming tool. (The drilling speed should not be too fast.) The drill bit is made of durable and wear-resistant bearing steel, which is not easy to break, wear-resistant and durable.