HVAC Swaging Tool Set, Air Conditioner Flaring Tool HVAC Swage Tool Repairing Kit Boring Drill Copper Tube Expender with Keychain & Carabiner & 7/8'', 3/4'', 5/8'', 1/2'', 3/8'', 1/4'' Bits - NQEUEPN, 1018103

• Package Contents: You will receive a set of HVAC swaging tools, including 6 drill bits of different sizes, 6 keychains, and 1 carabiner, a perfect combination for your convenience. Rich Sizes: Our products are suitable for 6 different pipes, including 7/8" (22.2mm), 3/4" (19mm), 5/8" (15.9mm), 1/2" (12.7mm), 3/8" (9.5mm), 1/4" (6.3mm), which can meet your various repair needs. Long-lasting Material: HVSC crimping tool drill bits are made of alloy steel, which is sturdy and reliable, hard-wearing, weather-resistant, not easy to deform, and can serve you for a long time. Easy to Install: First turn the carabiner knob to the left. then open the carabiner knob, install the keychain, and tighten the carabiner knob to the right. finally put your thumb and index finger on the bottom of the keychain and push forward to install the copper pipe expander into the keychain. Practical Tools: Our drill bits are small in size, and easy to carry and use, allowing you to easily enlarge the aperture. It is an essential tool for air conditioner maintenance. Note: The drilling speed should not be too fast.