C型管

The outer and inner diameter sizing makes it incredibly easy to connect sections for adding realistic gun barrels. Cutting it with a hobby knife was cleaner than I expected, and it really elevates the look of my plastic model kits.

I've been using this brass pipe to add tiny exhaust pipes and handrails to my 1/72 scale tanks and the fit between inner and outer diameters is just right. The clean cuts let me glue pieces together without any extra sanding.

The 5mm outer diameter fits perfectly inside the 4mm inner diameter tube, letting me layer details without glue. Cutting with a hobby knife left clean edges on the brass without deforming the shape. It's been a game-changer for adding realistic piping to my aircraft kits.