Hydrofarm Active Aqua Copper Air Divider, 12 Outlets

Allows airflow adjustments from your pump; Recommended tubing sizes, Input: 1/4" internal diameter, Output 0.17" internal diameter; Outlets can be individually opened or shut for total aeration control; 12 outlet, high quality blend of copper and stainless steel, individually controllable air divider

This multi-outlet divider can be individually opened or shut, for total aeration control. Recommended tubing sizes input 3/8-inch internal diameter and output 0.17-inch internal diameter. This product weighs 0.6-pound. Measures 9-1/2-inch length by 1-1/2-inch width by 4/5-inch height.