Ah well - my bad, I guess, for not looking closely enough to spot that wherever I got that photo had screwed up the description.
But 15mm x ½" do exist.
That looks right - the OD of the 15mm side would be, what - 17-18mm? (I'm guessing the wall thickness would be a bit more than that of 15mm tube)
But 15mm x ½" do exist.
That looks right - the OD of the 15mm side would be, what - 17-18mm? (I'm guessing the wall thickness would be a bit more than that of 15mm tube)