These 2-hole lentil shaped 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 bead holes are large and allow for multiple passes of beading threads. These 2-hole glass beads are made in the Czech Republic from pressed glass and have a very uniform 6mm bead size and shape. The corners are softly rounded and will not cut into your skin or thread. See for yourself. These CzechMates lentil beads have a 6mm diameter with a thickness of about 2.4mm and have two parallel holes each measuring 1.25mm in diameter.