Photo 1 of Siptenk 3/8" Brass Compression Fittings Sleeves Ferrules Inserts Nuts Fittings, 100PCS Brass Ferrule Tubing Insert Kit for DOT Air Brake Line Fittings

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Photo 1 of Siptenk 3/8" Brass Compression Fittings Sleeves Ferrules Inserts Nuts Fittings, 100PCS Brass Ferrule Tubing Insert Kit for DOT Air Brake Line FittingsPhoto 2 of Siptenk 3/8" Brass Compression Fittings Sleeves Ferrules Inserts Nuts Fittings, 100PCS Brass Ferrule Tubing Insert Kit for DOT Air Brake Line Fittings