Sizes
All tray compartments are cut to a depth of 0.6 (15.24mm).
The walls & dividers are 0.25 (6.35mm) wide and the bottom thickness is .2 (5.08mm)
Overall Dimensions, before sanding
Small = 2.93 x 4.33 x 0.8 (74 x 110 x 20 mm)
Medium = 5 x 4.33 x 0.8 (127 x 110 x 20 mm)
Large = 10 x 4.33 x 0.8 (254 x 110 x 20 mm)