9x12 Inch Dry Erase Boards, Classroom Whiteboard for Students, Double Sided, Set of 10 5 packets of Cotton Wool

5 packets of Cotton Wool

Can be used either Landscape or portrait

Trusted Chemical Compound: As a key compound in numerous pharmaceutical and industrial processes

Physical size (H x W): 45 x 12

Each of the large Aluminum Alloy tuning forks is hand ground to high accuracy and has a frequency of 440 Hz (hertz=cycles / second)

9x12 Inch Dry Erase Boards, Classroom Whiteboard for Students, Double Sided, Set of 10 5 packets of Cotton WoolPerfect for Classrooms. Dry Erase for Easy Cleaning. Slim Design & Reusalbe. Premium Quality: This item is made of high quality, heavy duty and durable materials. Designed for use in classrooms, household and educational settings. If you need custom order with different sizes design, please contact us. Safely Packaged to avoid being damaged during transportation.