These Karcher T10/ T7 and T9/1 are made from durable paper and come in a pack of 10. It is designed to be used with the Karcher T 10/1 Adv and dry vacuum cleaner and T 9/1 Bp a battery operated vacuum cleaner. It is also suitable for all industrial dry vacuum cleaners. Filter vacuum bags come in a pack of 10. Made from durable paper with a class M dust rating. Designed to be used with the Karcher T 10/1 Adv and T 9/1 Bp vacuum. Can also be used with all industrial dry vacuum cleaners.