8" x 3" Venev Dual Side Bonded Diamond Bench Stone 80 + 150 grit

Coarse side was dead flat against a precision engineer's square, fine side had low ends, but spec is 0.3mm flatness, and that's how low they were, maybe 0.35, so don't bank on it being perfect without some work, at least, not on both sides. I wanted the coarse side for my projects, so no big deal, and for a knife or something, the fine side would have been flat enough where it matters (the middle). Trying to lap in a flat surface with the fine side would not work, though. Not without first truing it using glass and silicone carbide powder as recommended by the Seller upon query.