https://www.youtube.com/watch?v=OfKUZExvX94&feature=youtu.be

CL-905-8   Air Tubing Adaptor Clamp
●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:
    905-8：8mm,9mm,10mm,11mm,12mm