Everything included in the sale ad and the bricks fit the base. The reason for the low score is the granularity marks, this seems to be a guess. "Small" stones feel and sound rougher than "rough" ones. I suggest avoiding.
Pros
γDesigned for Ultra Precision SharpeningγThis sharpening stone insert is designed for ultra precision sharpening. Even the best knives lose their sharpness over time. Your sharpening needs when you want to guarantee maximum performance from quality kitchen knives.