CzechMates Tiles are more durable and have 2x larger holes than Tila beads, allowing 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. The corners are softly rounded and will not cut into your skin or thread. Measurements: 6mm x 6mm x 3mm with two parallel holes each measuring 1.25mm in diameter. 25 beads per strand.