Seven Master One Way Check Valve Non-Return Aquarium Fish Tank Air Pumps Filter Plastic Non-Return Check Valve

Features: 100% Brand new and high quality Great one-way check valve for the aquarium air pump. Durable and easy to install. Fit standard aquarium air pipe of 4mm inner diameter. Material: Plastic Color: Transparent white Package includes: 1 x One Way Check Valve Note: 1. Please allow 0.1-0.5 inch differences due to manual measurement, thanks. 2. Please understand because of the light irradiation or computer display difference, the item`s color might be slightly different from the pictures.