The variable SLI connector nipple connects two graphics card coolers operating in SLI mode within a system. The unique feature of this nipple is that it is adjustable in length by approximately 12 mm. Therefore, this nipple can be used with graphics cards from different manufacturers. The nipple can be used to operate the graphics cards in series, or if two nipples are placed between two graphics cards, both coolers can be supplied with fluid in parallel. This is also possible with three graphics card coolers. The SLI connector nipple is available in three lengths: Art. 64033 for 1 slot, Art. 64034 for 2 slots, Art. 64035 for 3 slot motherboards. Technical specifications: A direct connector between two graphics cards. Thread: G1/4 inch. Material: Nickel-plated brass. Distance between coolers: from 18.9 to 30.3 mm. Suitable for motherboards with 1 slot. Compatible with Crossfire graphics card coolers from e.g., Ek Waterblocks, Koolance, DangerDen, XSPC, Alphacool OTC-Flat. Note: The nipple is only compatible with graphics cards that have 2 G1/4 inch threads on both the top and bottom. The nipple cannot be mounted on coolers that only have connections on one side.