Obtain a perfect chamfer on the ends of your Bowden tubing as recommended by some printer manufacturers. This tool has a razor sharp blackened steel blade, approximately 1 3/4 in (44mm) long, suitable for chamfering tubing up to 14mm ID. The tool features a tough, durable blue anodized aluminum handle and screw-on cap with knurls for a safe grip.

Its great for lots of other hobby projects too. You really can't afford not to have one of these in your toolbox.