Norgren pneufit 10019 series stem tailpiece to hose bore adaptors norgren 100191010 a stem tailpiece to hose bore adaptor for use in compressed air systems the connector has a push fit hose connection that is simple to use and provides a positive hose anchorage with a strong and leakproof connection norgren pneufit 100191010 stem to hose bore adaptor 10mm stem od 12mm hose bore