These are the ultimate cable management clips. Awesome quality and beauty. You need 6 mm space between motherboard tray and sidepanel to install it. The size is exactly specified for sleeved fan, pump or similar 2 - 4 pin cables. 

Specification:

• Fixing Hole Ø (FH): 4.2mm
• Bundle Ø max: 3.2mm
• Fixing Hole Centres (F): 8.5mm

 Package Contains:

- 25 Cable Managment Clips

Screws for installation are not included. You can get them: here