Adjustable Brake Fuel Line Tubing Pipe Straightener For 3/16in to 1/2in For Stainless Steel&Copper Diameter Pipes Aluminium. Name: Copper tube straightening machine Model: 535JC1803 Dimensions: 28070235MM Weight: 5.9KG Tube size: 3/16″-5/8″ (4.75-16MM) Name: Copper tube straightening machine Model: 565JC1806 Dimensions: 280110230MM Weight: 6.5KG Tube size: 3/16″-1/2″ (4.75-12.7MM).