These are temporary joints (connecting pieces) that protect the tenon when the neck is disassembled into three parts. They are not excessively tight when inserted or removed. Wooden parts, a set of 4 with markings. Antique item from 50 years ago. - Type: Shamisen - Material: Wood - Quantity: 4 - Markings: 一, 二, 三, 四 (One, Two, Three, Four) - Use: Musical instrument parts Thank you for viewing.