These Two-Hole crescent beads are part of the Czechmates 2 Hole beading system, with the holes perfectly aligning with those of the other two hole beads manufactured by Starman (including the two-hole tile beads.) The CzechMates crescent bead holes are large and allow for multiple passes of beading threads. These beads are made in the Czech Republic from pressed glass and have a very uniform size and shape. They measure 10 mm x 5 mm and are 2mm thick. They are packaged in 8 grams packs which is about 60-65 beads.