Table mount for M6 PTFE fitting

Hello I designed a table mount for PTFE fittings in SolidWorks. My filament box sits under my desk, and I was looking for a way to secure my tubes so I can quickly change the filament. You simply use standard M6 pneumatic fittings and carefully screw them straight into the holes from both sides. For attaching it to the table, I use 4mm x 20mm countersunk wood screws.