Quick and Secure Connection: Features G1/4' Male Thread to 3/8' (ID) Tube Barb for a swift and reliable setup, enhanced with an O-ring for a watertight seal. Versatile Compatibility: Designed to fit 3/8' ID Tubing, perfectly accommodating 9 - 10mm inner diameter soft tubes. Durable Construction: Crafted from high-quality brass with a sleek black chrome finish, ensuring longevity and resistance to rust. Precise Dimensions: The barb has an outer diameter (OD) of 11mm and a length of 15mm, with a G1/4' thread length of 5mm and an overall length of 25mm, for a perfect fit. Complete Set: Each package includes 6 pieces of the G1/4' to 3/8' Barb Fitting, providing ample supply for your connection needs.