Simple knife block for drawers

My girlfriend suggested that I made a knife block for our kitchen knifes in th drawer. Seeing how happy it made her, I thought I better share this design.

I made five different sizes. All with 3mm wide slot to stand the knifes in. The first number (the one followed by an M) is the witdh between the slots in cm. The last number (after the x) is the number of knifes it will hold.