This handy sharpener has two different sized holes plus a drum to catch the shavings. With the large hole (11mm) you can sharpen Lyra's Color Giants and Skin Tones. The smaller opening (8.3mm) will sharpen their Rembrandt Aquarells as well as regular pencils. Does not work on triangular shaped barrels. Twist off the top to empty the drum when full. Colors vary.