Gut strings from Gamut, a string manufacturer in the United States. Purchased in July 2023 and used for about two months. They have been stored since then. The tailpiece end has a washer, so there's no need to tie a knot. The material is gut with silver winding. The current retail price is about 24,000 yen. Gamut is an American company, so shipping costs about 5,000 yen on top of that, making this a great deal for anyone who wants to try gut strings. - Brand: Gamut - Model: Contrabass A-3 - Type: Gut/SP Medium - Condition: Hand Made and Tested - Features: Perfect Gut, Perfect Gauge, Perfect Purity of Tone Thank you for looking. Thank you.