Note: For most applications, you will mostly require 4 rings to keep your checklists or inflight guides secure.

Durable, Unbreakable, Multi-Purpose, Safe. Opaque nylon rings hold your checklists and in-flight guides on our Fly Boys Kneeboards (with eyelets). Or use them for outdoor use where metal rings would rust or wear out. The days of the metal ring are over. Here is why.

- Featuring a patented ball-lock design to prevent FOD out on the flight line. This is not hinged. There is very little resistance to checklist pages when they move over this closure. The nylon ring is very low resistance as well. Pages really slide well, getting you to the page you want without the problems metal rings give.

- As far as Safety goes, there is no question this is the ring to use. Once they are closed, they stay closed.

- When closed, they are a 1.5" diameter ring. Opened, they stretch to 5". For most applications 4 rings is plenty for keeping your checklists or inflight guides secure.