It is a single type with a replaceable gas mask R-5-08 type (Koken) absorption can on the front. It is possible to attach canisters that are compatible with a wide variety of compatible gases. Three types of organic gas can be selected according to the usage time. Gas mask with total function to achieve high protection. Adopts a free position underchin face piece (silicone) with high adhesion, and a tightening string that makes it easy to adjust the length for an easy fit. There are many variations of canisters. Uses a clear and wide canister tightening ring. The color (type) of the canister is easy to recognize, and replacement is easy. The canister can be easily installed by simply pressing it into place. Model name Sakai R-5-08 type National test pass No. TN421　 Respirator Koken R-5, Koken Gas mask R-5-08, koken mask R-5-08, Masker Koken R5-08, masker pernapasan