1Solid steel construction, anti-corrosion and wear resistance, durable for long time use. 2Compactness of structure and high accuracy thread guarantee high tightness of connection. 3It has a good resistance to vibration and pipe movement. 4International BSPT standard thread adapter, easy to install. 5High pressure resistance, not easy to fall off. Widely used for pipe connecting. Features: Solid steel construction, anti-corrosion and wear resistance, durable for long time use. Compactness of structure and high accuracy thread guarantee high tightness of connection. It has a good resistance to vibration and pipe movement. International BSPT standard thread adapter, easy to install. High pressure resistance, not easy to fall off. Widely used for pipe connecting. Specification: Material: Iron copper plating Thread specification: #01 1/8" BSPT male; #02 1/4" BSPT male; #03 3/8" BSPT male; #04 1/2" BSPT male (Optional) Heat resistance: 0-60 Package List: 5 x Pipe Fitting