You simply turn them upside down and watch the coloured bubbles simultaneously walk down the staircase to the bottom of the tube. The liquid timer takes approx 1 min to run through.
Expected delivery time
: 2 month(s)
Shipment in 2-3 days
: 2-3 days
Stock :
This product is not in stock
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Size: 15/4/4 cm. Usage: Visual effects Material: Plastic/Glass Weight: Approx: 240 g. Color: purple, blue, green
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