10PCS Self Watering Spikes for Plants Adjustable Valve Waterer

- ADJUSTABLE FLOW CONTROL ? These plant watering spikes feature a side rotating valve that lets you regulate water release for different pots and soil conditions, creating a simple Automatic Flower Watering Device for routine plant care. - 28?30 MM BOTTLE FIT ? The plant self watering spikes are designed for bottle openings from 1.10 to 1.18 in (28?30 mm). The opening measures about 1.38 in outer width and 1.18 in inner width; measure your bottle neck before setup. - IN TAPERED STAKE ? The long self-watering stakes profile is designed to insert easily into potting soil and guide water closer to the growing area. This compact self watering planter insert works well with indoor planters, flowerpots, and patio pots. - LIGHTWEIGHT PLASTIC DESIGN ? At approximately 0.28 oz (8 g) per piece, these plant self watering devices are lightweight and easy to handle or reposition. The tapered plastic body creates a straightforward bottle-fed watering setup without pumps or electronics. - VERSATILE PLANT WATERING ? Use these indoor plant watering devices as an auto plant waterer for houseplants, herbs, flowers, planters, patio pots, and other potted plants. Test the valve setting first to find a suitable water flow for your plant, soil, and bottle.