ALLOY STEEL มาตรฐาน JIS
Made in Japan
เบอร์ 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 35, 36, 38, 41, 46, 50, 54, 55, 58, 60 mm