You have to have this with your Ohuhu markers! I am relatively new to alcohol markers. I have purchased 3 sets of markers from the 2 different series of Ohuhu alcohol markers, including brush, chisel, and fine, in different combinations. I enjoyed them, but was struggling to get the results I wanted…until I received these books! Perfect, seamless, EASY blending, some shadowing but no bleeding to next page, no feathering, and it will go through my laser printer. If you have Ohuhu markers-Buy This! A spectacular combo.