ChiaoGoo Twist Shortie Tip Sleeves are perfect for storing extra ChiaoGoo mini tips.
2577-M has 6 slots for sizes (2.0mm), (2.25mm), (2.5mm), (2.75mm), (3.0mm), (3.25mm). Sleeves fit nicely in most interchangeable sets and cases.
2577-S has 5 slots for sizes (3.5mm), (3.75mm), (4.0mm), (4.5mm), (5.0mm). Sleeves fit nicely in most interchangeable sets and cases.