This product is either discontinued or we cannot get that from suppliers.
G.Skill F4-2666C15D-8GVR, Capacity 8GB (4GBx2), Dual Channel Kit, Speed 2666MHz, 1.20V, Unbuffered, Non-ECC.
As the latest addition to the classic Ripjaws family, Ripjaws V series is the newest DDR4 memory designed for maximum compatibility and cutting-edge performance with the latest Intel Core processors.