6pcs hex handle hvac tools air conditioner copper pipe swaging tool round handle tube expander drill bit repairing set with 1/4, 3/8, 1/2, 5/8, 3/4 bits -

Step Choose suitable drill bit according to the diameter of the pipe and process requirements...
Step Insert the drill into the power drill interface and clamp it, then pick up the tube...
Snap the drill into the pipe that needs to be enlarged..
Step Tighten until the expander drill bit cap exits to complet...
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