Plastic, safe, 30 Seconds timers. Set of 20. Single height: Approximately 8.6 cm
Multipurpose : You can use "Sand Timers" in various situations. Great to use in the kitchen, while playing games, while exercising, brushing teeth or work with children of any age.
School : Every teacher knows that Sand Timers are a great tool for every classroom. Try to focus one minute on something and learn to improve.
Material : Our sturdy and durable sand timers are made of durable PVC, instead of cheap plastic,not easy to break.
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