The top edge has a flat surface on these, unlike the PG drawings. This style also matches the E.S.G. & Co knobs. The tall one on the left is 2 1/8" tall. The color is indescribable. It has a tint of -something. The center one has a tint of light aqua. Cool pieces. Compare the upper edge to these other CD 1080 knobs: [id=244462983]