Description : Material:PlasticColor:Blue, Green Feature : 2. Design for control the velocity of flow,plant watering devices with Control valve can control the drip speed 0-60s/1 drip, Slow release drips lasts 1-15 days.2. Easy to use, Without any tedious installation, all you need just drill some holes at bottom of bottle or cut it.3. Accurate amount of water, give didfferent amount of water for different plant and flowers, Don't become a plant killers, others either water too little or too much.In some plants, old leaves just turn yellow and drop. But if new growth is yellow it could be a sign of overwatering or underwatering.4. Watering bulbs Fit most below brand's bottle: Pepsi,coca cola,Lipton,Deet Coke,Aqufina or other bottle that have 1.1inch inner diameter capsule.5. Enjoy your vacation with your family,your plants leave to me.self plants watering spikes prefect for your vegetables,indoor outdoor garden, water plants day-to-day,potted plants, houseplants, herbs,patio plants, hanging baskets, desk pots,hanging plants ,small tree,shrubs.