Only because I tie hundreds of small dries and standard nymphs/soft hackle throughout the year. I have about 4 of those full of my most commonly used hooks, great idea and they do work well, the ones I have look a bit bigger than those pictured (not too sure where I bought them) they will hold about 500 #10 standard dry hooks per compartment (that translates to about 1000+ #16 standard dry hooks).

Steve