1/8″ Rectus 21 Nipple, 1/4″ FNPTF Brass (100671-1-2) Safety Notes:It is important to be safe when installing quick disconnect couplings into a pneumatic circuit. Never install a pneumatic coupling directly into an air tool, use a piece of hose that is at least 18″ long, between the tool and the coupling, to prevent damage to the coupling. To protect the operator, safety devices, such as a safety check valve and safety cable should be installed in case there is a hose or coupling failure.; WARNING: Cancer and Reproductive Harm- http://www.P65Warnings.ca.gov Use:Not Available. Contact for More Information. Specifications:Not Available. Contact for More Information. Features:Not Available. Contact for More Information.