Viair 92846 1/4" Male x 1/8" Female x 1/4" Female NPT T-Fitting 3-Way Pneumatic T-Fitting 1/4 Inch Male NPT, 1/8 Inch Female, 1/4 Inch Female NPT Used to add ports to tap into an onboard air system. Weights less than 1/4lbs. Be sure to use thread sealant to prevent leaks.