This is one of the best ways to make an SLI/Crossfire connection between two water blocks!
The two fittings are screwed into the water blocks.
In between is a transparent acrylic tube (Crystal Link Tube), which makes the connection complete.
Because of the transparent acrylic tube the colour of the coolant is nicely visible, especially in combination with UV!

ATTENTION:
1) Delivery per piece, therefore order TWO for a complete set.
2) The Crystal Link / Acrylic Tube has to be ordered separately.

Features: 
1. True Hi-Flow Design. 
2. Hi Quality Brass Material. 
3. High Durability Nickel Finished In Silver Shining, Black Sparkle or Matt Black Color.
4. Design For Multi-Link Extension Application Via Acrylic Tube OD 12MM On Both Side. 
5. RoHS Compliant.
Thread : G1/4"
Thread Length : 5MM

***All Specification Will Be Changed Without Further Notice***