These n to sma bulkhead and flange adapters are usefull for passing signals though walls or into enclosures. One interface is sma, one is n. Our sma to n bulkhead and flange adapters are available in both brass and stainless steel versions. We also offer various vswr grades for our n to sma flange and bulkhead adapters. Both sma to n flange adapters, and sma to n bulkhead adapters, are usefull for transitioning between walls.