• 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: 15mm,16mm,18mm.

• 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: 15mm,16mm,18mm.