Concave Convex Surfaces Design: Designed with Dense Concave Convex Surfaces, It Could Grind Your Pencil Efficiently. . Detachable Reusable: The Small Box Below Is Detachable, The Purpose Is to Pour Out The Pencil Shavings In The Box, Detachable and Easy to Clean, Can Be Reused. . Size: Approx. 10 X 4Cm / 3.9 X 1.6In. Pocket Size, Easy to Carry and Use. . Sketching Board Clip: You Could Clip On The Sketch Board, Fixing The Drawing Board and Sketch Paper and Collecting Lead Powder. . Wide Application: Perfect Drawing Accessories for Students, Artists, Children and Sketch Drawing Beginners. .

Note:Shipping time is 5-12 days