The Bitspower Dual PCI Pass Thru Plate uses two expansion slots to allow tubing to pass through from the outside allowing for external mounting of the radiator. Maximum outer diameter for the tubing is 13/16" (20.6 mm).
This kit fits in your case's expansions slots and allows two tubes to pass through it and connect to your external radiator. Designed for Innovatek's proprietary tubing
Double G 1/4 socket fittings integrated into a rear computer slot bracket. Threaded nozzles are used for the inside and outside (2 pair, not included). Nickel-plated brass.