Originally Posted by Mustardman
I actually got them from Grainger:
Snap Button,A,0.250D x0.390 H,Pk10
Item no: 3DPZ8
Originally Posted by gmcttr
I set up a jig and got them drilled/installed accurately enough that all tubes are interchangeable. The snaps are much
nicer than having to tape the connections.
Thanks again MM.