These sleeves are perfect for storing extra ChiaoGoo Mini tips. Has 5 slots for sizes: US 000 (1.75mm), 00 (1.50 mm), 0 (2 mm), 1 (2.25 mm), and 1.5 (2.50 mm). These sleeves fit nicely in most interchangeable sets and cases. Dimensions: 2.75 inches x 4.75 inches (7 cm x 12 cm)