20PCS Aquarium 1-way Valves Threaded Air Distributor Splitter Control Valves

Description

Features:
Fit standard 3/16" diameter tubing.
Manually control the flow of vital O2 or switch an air pump "on or off"
Includes: 20pcs valves. Best choice for aquariums and
hydroponics.
Includes:
20 pcs threaded air valves