These Two-Hole brick 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 of these CzechMates brick beads 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 size and shape. The corners are softly rounded and will not cut into your skin or thread. These beads measure 3mm x 6mm x 3mm and have two parallel holes each measuring 1.25mm in diameter.