X40 Pack Freaky Color Units (Pink, Yellow, Blue and White).
Portable dental fantasy instrument very useful for children to learn how to clean their teeth cleaning time with this unique hourglass.It has two connected plastic bulbs that allow the regulated flow of fine sand inside. When the upper bulb deflates, it can be reversed to start timing again. The ends of the hourglass are made up of two molar forms of plastic.
Dimensions: length 10 cm x width 2 cm. Made of hard plastic.