1.AUTO-FEED FEATUREDUTY HELICAL STEEL BLADESpecifically designed Auto-feed feature, simply, efficiently, securely and reliably.Pencil Sharpener With a heavy duty helical steel blade, can sharpen up to 6000 times. The rotary blade has alloy structure, which is more durable. 2.SMALL VOLUMEIt works quietly and suitable for 6-8mm wooden pencils and colored pencils.The volume is very small, you can put it in any corner of the backpack. 3.5in -1.7in-2.9in (including the handle). 3.LOW NOISE AND EASY TO USESmooth manual operation pencil sharpener. Quiet and Classroom Friendly.It works quietly and suitable for 6-8mm wooden pencils and colored pencils. It is easy to use for school kids.An Excellent Gift For Kids And Students. 4.UNIQUE DESIGNSharpener Mechanism automatically draws pencil into the cutting chamber, producing a pefect point. Once the pencil is sharp, the Sharpener unique design will not allow the pencil to over sharpen. 5.LARGE-CAPACITY STORAGE BOXThe large-capacity storage box can be used for a long time without staining other places. ABS plastic parts are strong, durable, colorfast and recyclable.