Pencil Drawing Electric Eraser Student Sketch Highlight Erasing Effects Office Kids School Battery Powered Refills Stationery Gift Feature: It is very suitable for painting, drawing, architectural plan, sketching, etc. There are two different sizes of nibs. The small pen tip allows you to erase the target area effectively and accurately. There are 10 small replacement cores and 12 large replacement cores inside. Specification: Color: Gray, White, Black Size: 166*15mm material: plastic Battery: 2 AAA batteries (without batteries) Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 X Electric Eraser