The King HT-65 is a 1000/6000 grit combination water stone with a non-slip base.
It's the one we recommend for novice and intermediate sharpeners. Sharpen on the 1000 side, then polish on the 6000. The stone is 185 x 63 x 25 mm (7.3 x 2.5 x 1 in) and weighs 600 g, or 750 g on its base. Give it a short soak before use.
King water stones are made by Matsunaga Stone Co., founded in Osaka, Japan, in 1948. They were among the first Japanese water stones sold in the West.