KLIR-4 Bypass Fix - Hex w/ Ledge

I liked the Klir-4 Filter Bypass Fix by @eggplantparrot but I wanted it a bit less open and with a "ledge" so that it fits in and won't come out.

Essentially this fits in the top cut-outs on the KLIR4 and it prevents the ability for the water to push the filter out of the way and have water bypassing the filter.

I don't know if it'll ever get loose and fall back into the roller, but after a couple days it hasn't yet. So beware of that issue. You can of course also glue it in from the outside.