Check the listing for details. 6 PCS Air Filter for Continuous Ink System CISS CIS. Condition: New. Listed at 4.99 USD. Product Detail:One set of 6 air filters for CISS (Continuous Ink Supply Systems).They can be installed on almost any CISS or refillable cartridges.It is recommended to change CISS air filter every six months or whenever stained with ink.Dirty filters will change external tank pressure and affect the health of printer head.Package Includes6 Premium Grade Air Filters.ShippingShipped from North Carolina, U.S.A.The handling time is 1 business day.Within USA and Territories: We will provide full door-to-door tracking. Usually arrives in 2-5 days.International: You can decide on a limited tracking or door-to-door tracking. There is no difference in speed. Usually arrives within 2-6 weeks. Economy International Shipping: Tracking limited within the USA. BCH is not responsible for a package lost.Standard International Shipping: Door-to-door tracking. BCH will replace a package (or refund) if it is lost.Return & ExchangeReturns Accepted: After receiving the item, the buyer should contact us within 30 Days.Refund will be given as money backReturn shipping will be paid by buyer