Package Includes: This package comes with 100 chalkboard , enough to use and replace, each dry erase pen measures about 11.3 cm/4.45 inches, the perfect size for your use MAGNETIC FEATURES: These dry erase markers are designed with a magnetic erasing cap that adheres to any magnetic receptive surface for your , and the eraser is detachable, saving space and energy writing: Made of high-quality plastic, and unbreakable, and clear writing when smearing, quick-drying ink, low odor, easy to erase EASY TO USE: The magnet on the marker cap sticks to the metal whiteboard surface, saving space; easy to use, -free and clean surface Wide applicability: Magnetic dry erase markers can be applied to dry erase boards, cardboard, glass and most non-porous surfaces, suitable , office, school, classroom, etc., to meet your different needs Colour:As shown Material:plastic Package Contents: 100 x chalkboard Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.