• Grip the plastic tube, let the copper coupler can put into the tube easily.
• For truck, trailer and bus…etc.
• Fit the air tubing size: 8mm, 9mm, 10mm, 11mm, 12mm.

• Grip the plastic tube, let the copper coupler can put into the tube easily.
• For truck, trailer and bus…etc.
• Fit the air tubing size: 8mm, 9mm, 10mm, 11mm, 12mm.