Fangrui Product Details 5pc Adjustable Self Watering Spike Automatic Drip Irrigation System Plants Flower Greenhouse Garden Auto Water Dripper Device Description:name: Garden Plant Watering Nail Material: Plastic Size: 17.5*5cm Water Bottle Mouth: 25-30mm Weight: About 20g/1pc Color: Beige, Red, Blue Specifications: The Flow Rate Can Be Controlledthe Plant Watering Device With A Control Valve Can Control The Drip Speed 0-60s / 1 Drip, And The Sustained-release Drip Lasts 1-15 Days Simple And Convenientwithout Any Cumbersome Installation, Just Drill Some Holes In The Bottom Of The Bottle Or Cut The Tail Of The Bottle Accurate Water Volumeto Provide Different Amounts Of Water For Different Plants And Flowers, Do Not Become A Plant Killer, Other Watering Plants Either Have Too Little Or Too Much Water. In Some Plants, The Old Leaves Just Turn Yellow And Fall. But If The New Growth Is Yellow, It May Be A Sign Of Over-watering Or Underwater Suitable For Bottlessuitable For Water Bottles With A Diameter Of 25-30mm, Such As Water/soda/soda/juice/bottle. Multipurposesuitable For Automatic Watering Of Indoor And Outdoor, Home Or Office, Potted Or Garden Plants On Vacation, Vacation, Business Trip. Package Included: 5 Pcs*watering Spikes