[BSPP thread] ---The air hose manifold block adopts 1/4 inch BSPP thread, which can be widely used, and there are two specifications of 3-way and 4-way for your choice. Service Guarantee:You can contact us if you have any questions before purchasing the product or after purchasing the product. We must promptly and properly solve your problem. 1/4 Inch BSPP Thread:The air manifold has a 1 / 4-inch BSPP thread, which makes it more versatile. High Quality Material: Made of high quality aluminum, anti-rust and Thresd:1/4 inch BSPP thread for broad applications., Weight: 0.1322773572 Pounds, Manufacturer: Garosa