3/8" ID (5/8" OD) Air Line/Hose Clip (Sliding fit)

This is a pneumatic air line hose clip that requires no gluing & has a hidden fastening (#6 Countersunk Screw)

Simply print both parts, screw the bottom to your wall, insert the hose & slide the top part into the groove to secure it

0.5 ID model version added by request.