The size of these glass beads is 8mm. This one is a rare large size. Flat on one side and smooth dome on the other. Yummy and unusual to come by. Made in Czechoslovakia way back when. They are from the early 1900's. What a find! Glass nailhead beads were used in the days of the flapper to embellish garments before sequins were developed. You will receive 24 beads per lot.