A guard to protect a telephone cable as it comes out of a wall, from being snagged. Allows for a reasonable bend radius before coming out the hole where it can be tacked to the wall. Has two holes to take countersunk screws to attach it to the wall. Works for cables up to 6mm diameter.

Geeetech

Geeetech I3ProB

No

Doesn't Matter

0.35mm

Gyroid

Printed as shown, with supports but can probably bridge the gaps without needing supports.