The beautiful brass, German-engineered, Alvin pencil sharpener is almost unbreakable. These are Mercedes or BMW-like quality level sharpeners! Easy to hold with nice finger grips on each side. They have two holes to accommodate different pencil types and sizes. Engineers, drafting students, and everyone who likes to work with very sharp pencils will find these pencil sharpeners of top quality. The blades do not wear out until after a long period of use, and then they are replaceable. Everyone likes to have one of these handy, so it is good to have one in every desk drawer and tool tray of each drafting table. They come in a nice box of 12.