[Sufficient Quantity]:You will get 40pcs humidifier filter sticks,fit for most portable personal USB mini humidifiers,please make sure your length and diameter before purchase [Good Water Absorption]:The humidifier filter stick can uniform pore distribution,strong water absorption,support various types of essential oils,perfume,liquid,and others [Durable Material]:The humidifier stick is made of fiber material,insoluble in water and not easy to sticks,supports most kinds of solvents,help your humidifier work better [Replacement]:Refill replacments swab for mini diffusers humidifiers [Easy to Use]:Mini humidifier filters sticks are simple to remove and install,allowing you to finish installation in few seconds,please soak a filter stick to wet completely before inserting to the humidifier, Weight: 0.16755131912 pounds, Manufacturer: PIXZCSA