Size Choose from:10x8mm,3.6mm thick, approx 40pcs in one strand
14x10mm,2.6mm thick, approx 28pcs in one strand
16x12mm,2.9mm thick, approx 25pcs in one strand
18x13mm,3.5mm thick, approx 22pcs in one strand
20x15mm,3.5mm thick, approx 20pcs in one strand
25x18mm,3.3mm thick, approx 16pcs in one strand