Material: brass.
Sealing ring material: silica gel.
Thread Size: G1/4".
Barb OD Size: 9mm / 3/8".
Applicable Hose Diameter: 7-8mm/0.28-0.31Inch.
Color: sliver.

What you get:
4 x G1/4" to 3/8" Barb Fitting

Feature:
Made of brass material, chrome-plated to prevent rust and durable.
Inside chamfers to reduce drag.
With concealed silicone ring, perfect for connection and sealing. Effectively prevent water and liquid from flowing out.
Ideal for connections between radiators, pumps, tanks and other water cooling system kits.