Karcher M-Class Fleece Filter BagsSafely Use with M-class levels of hazardous dust HEPA rating 99.9%Its Fleece Filter material makes it tear resistantNo more stop & starts with its large 30L capacitySuits These Models:NT 30/1 Ap L *AUNT 30/1 TACT TE L *AU (1.148-213.0)NT30/1 Tact L (1.148-203.0)NT30/1 Tact Te L-Class (1.148-203.0)NT 30/1 TACT TE M *AU (1.148-246.0)Note* To safely collect hazardous dust requiring M-Class rating – this bag must be used with an M-Class rated vacuum