ZooziiZulu...the beads remind me of the cool shields of the Zulu People! The side drilled holes are off center to allow the finished bead to hang nicely if strung directly on beading material. The measurements are as follows: Thickness: 8mm Length: 35mm Width: 22mm This tool will accept up to a 3/32nd mandrel. Hint: This tool works well with a "chunky donut bead", a bit off center, as the "pre-press" shape. The donut should be about 1mm thinner on each side then the press is wide.