Simple rounded cable hooks designed to screw into your desk.  Can also be used for other purposes!

There are 3 sizes to choose from. 25mm, 40mm, 60mm. (These values denote the outer diameter of the circle.)

There is a version with a little lip for each size.

All versions have 2 screw holes. 

25mm: 3mm screw hole

40mm: 4mm screw hole

60mm: 5mm screw hole

Hooks with the lip can be mounted with only one screw as the lip prevents the hook from spinning.