Plant propagation jars have 2.5CM pre-drilled holes in cork stoppers, making it easy to secure plants and support healthy hydroponic growth. This propagation vase set includes 3 glass jars, 3 cork stoppers, and 1 bamboo tray, providing everything needed to start hydroponic planting right away. Propagation Vases feature clear glass bodies and natural cork stoppers, creating a fresh, elegant desktop micro-landscape for hydroponic plants like pothos. Hydroponic Vase set comes with a 22CM bamboo tray, which stably holds three glass plant pots for a coordinated, aesthetic look. Clear glass plant pots allow easy monitoring of water levels and root development, simplifying maintenance for busy office environments.