This is a new item. These are brush caps for calligraphy brushes. This is a set of two large caps. Made of plastic. Large: Inner diameter 14mm By putting this on the brush after use, you can store it without making a mess, and it can be used immediately without drying out for about a week. Made of plastic. *If you would like more than one set, please let me know in the comments. *Instant purchase is welcome. No discounts are available. (For reference: Small: Inner diameter 9.0mm) Small set of 2: 660 yen Large set of 2: 700 yen Small and Large set: 680 yen Small, Large, and Extra Large set: 940 yen