15mm pipe clip (or 22mm with scaling)

Made these to hold 15mm copper pipe to the wall. Was fed up with limited variety of pipe clips where the screw is directly behind the pipe and completely inaccessible. Use M3 screws (or small self tapping screws) to hold the top to the body once the pipe is in place. Could be scaled up to 22mm pipe; but off hand I don't have the ratio - easy to calculate though.

UPDATE - quick calculation for the ratio to make it a 22mm pipe clip. The pipe opening is actually set to 1mm large (i.e. 16mm). The