40 size SUS chain (3m) x 6 box set ☆ Total 18m ☆ 50 size stainless steel chains are also available, so feel free to comment. m(_ _)m Features The stainless steel chain is made entirely of SUS304 material. Applications For use in environments with chemical corrosion from acids, alkalis, etc., places where water or steam is applied, and high or low temperatures. Pitch (mm): 12.7 Roller outer diameter (mm): 7.92 Inner link inner width (mm): 7.95 Country of origin: Japan One box is 7500 yen ☆ Katayama Chain SUS Chain