This watering can cap can be installed on the neck of the bottle. Your bottle will then become a watering can. Suitable for watering plants in the workplace, home or elsewhere Color: Red, Green, Blue; Cap internal diameter: 28mm / 1.1"; Overall dimension: 46mm x 30mm / 1.81" x 1.18" (L*W); Package Content: 3 x Red watering caps, 3 x Green watering caps, 3 x Blue watering can caps Made of PVC plastic, durable and lightweight. The water flow is smooth and steady, and it is easy to control. You can screw the cap of the watering can on the water bottle, such as a soda bottle.Then squeeze it to use 1.These bottle caps are suitable for bottle necks with an outer diameter of 28mm; 2. It is recommended to use 0.5-1.5 liter bottles, it is easier to control the crushing direction and force 3. Do not add anything other than pure water. Avoids blocking the water outlet with fine particles