You will need 2 x 2L empty bottles to use the connector. This experiment allows kids to build a simple tornado model. A great one to do indoors. Tornado in a bottle (Bottle connector only)€5.00PriceQuantity*Add to CartRETURN & REFUND POLICYProducts can be returned within 30 days of purchase. For return and refunds please email planetsciencekidz@gmail.com
){kind=link}