4PCS Copper Tube Bender Kit, 4M(13Ft) X 1/4 3/8″ 1/2″ 5/8″ HVAC Pipe Bending Spr
Just insert the correct color-coded strip inside the copper tube, manually bend the tube to your desired angle, and then slide the strip out. This simple process effectively supports the inner wall of the tube, maintaining its perfect roundness and preventing costly flattening or deformation that can compromise the entire system.