Durable PVC, ABS, glass pipes and sand. Daily cooking, games, children’s teeth brushing, sports, school and so on. You can also put it in your home or office as decoration. Counting time: 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, 10 minutes. This is an hourglass timer designed for games, not a precision timing device, so each one has a 10% time deviation. Approximately 3.4 x 1 inches. 1 location includes the shipping cost to US. Orders of 10, 000 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.