Clock Boards Write-On/Wipe-Off Premium Quality: All beakers and

Premium Quality: All beakers and cylinders are made of thick and high-quality plastic

Designed for use in professional laboratories but is an ideal choice for science classrooms and household use

Including Wooden Resonator and Hammer

10W filament bulb and plastic accessories for high-quality optical experiments

Clock Boards Write-On/Wipe-Off Premium Quality: All beakers andFeatures digital and analogue clock faces. Wipe clean clock boards. Includes activity guide. 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.