Please allow 0-1mm discrepancy due to different measurement method.

Material: K9 optical glass, coated for reflection on the long side.

Size:

10x10x10mm / 0.39x0.39x0.39 inches

15x15x15mm / 0.59x0.59x0.59 inches

20x20x20mm / 0.78x0.78x0.78 inches

25x25x25mm / 0.98x0.98x0.98 inches

25.4x25.4x25.4mm / 1.0x1.0x1.0 inches

30x30x30mm / 1.18x1.18x1.18 inches