Now you can be able to secure your Check List book into your kneeboard! All Fight and Flight Kneeboards (and some other manufacturers boards, too) come with loop-side material on either side of the clipboard to attach accessories. The adapter is 2" wide with 5 grommets, with hook fastener on both sides, so you can use it either direction, on either side of our kneeboards. If you have or are going to get a Mod 2 "skinny" kneeboard, the Slimline Checklist Adapter is the best fit for you.