1 x AN10 Male Thread Flare Bulkhead Pipe. 1 x AN10 Bulkhead Nut. High Quality Material: The 90 Degree Bulkhead Flare (including the Body, Lock Nut, Sleeve & Nut) is all made from light-weight 6061 aluminum.Bulkhead Flare Fitting feature: anti-rust, waterproof, oil-proof.