18 popular sizes (innen-ø x thickness): 20 pcs. 3x1 mm, 20 pcs. 4x1 mm, 20 pcs. 4.5x2 mm, 20 pcs. 5x2 mm, 20 pcs. 6x2 mm, 20 pcs. 6x2.5 mm, 20 pcs. 6x3 mm, 20 pcs. 7x2 mm, 20 pcs. 8x2 mm, 5 pcs. 9x2 mm, 5 pcs. 10x2 mm, 5 pcs. 12x3 mm, 5 pcs. 13x3 mm, 5 pcs. 14x2.5 mm, 5 pcs. 17x2.5 mm, 5 pcs. 18x4 mm, 5 pcs. 20x2 mm, 5 pcs. 22x2 mm