I have a special love for palm wood beads with their distinctive striped patterns and these large size coin beads do not disappoint. They are all very close in size but not exact and seem to range from 18-20mm with thickness varying as well. The wood is notched at each end of hole (almost makes them pumpkin shaped) which would facilitate offsetting them 90 degrees from each other or creating a little nesting space for a bead in between. Holes are approximately 1mm. Made in Philippines. Sold per lot of 20 pieces. Packaged loose but strung length runs between 15-16".