Nitrous Pro Flow's unique Patent Pending bottle mounted high flow filter is a must for prevention of costly solenoid damage and lost races due to debris entering the solenoids, nozzles, and/or spray bars. This filter was designed to provide a minimal pressure drop for maximum flow and to prevent a phase change in the nitrous oxide as it passes through. It replaces the bottle adapter fitting and in-line filter for a cleaner, more efficient package with fewer connections. Our filter incorporates a stainless steel body and a cleanable stainless steel mesh filter element. Fits all standard nitrous bottle valves and available in #4 or #6 feed line sizes. Required for use with all Nitrous Pro Flow systems.Nitrous Pro Flow #6 High Flow Bottle Adapter w/ Filter 368016 Straight Fitting Nitrous Oxide Filter 1" Female Threads -6 AN Male Threads Stainless NaturalPit Stop USAoffers Nitrous Pro Flow #6 High Flow Bottle Adapter w/ Filter 368016 at low everyday prices. Be sure to check out all of our products from Nitrous Pro Flow including Nitrous Pro Flow Nitrous Oxide Filters.