* Fitting Angle: Straight * Fitting Size End both: 3/16 inch Material:Premium Brass Dual couplings for joining two tubes of the same diameter -Solid brass construction for durability and resistance to corrosion -Back ferrules hold tubing tight within the body of the fitting while front ferrules hold tubing tight through the nut -Compression connections on both ends to provide a leak-proof connection without the need for additional joining preparations -Capable of joining a variety of tubing materials such as stainless steel, copper, and rigid and semi-rigid plastics and polymers