These laminated pages allow you to use an alcohol map pen to write on them and reuse the page multiple times. This page works for the Nightforce NP-R2 Reticle and it allows you to setup and record your reticle holds for your rifle scope with your shooting data for quick and easy transitions from target to target without having to touch your elevation knobs. These pages are a much needed asset for anyone needing a quick reference chart when shooting multiple target engagements using hold over’s or hold under’s.