Parker 6604 25 00 Tube Fitting, Equal Tee, for 25mm: Industrial Tube Fittings: Amazon.com: Industrial & Scientific
Parker Hannifin 215PN-4 Brass Close Nipple Pipe Fitting, 1/4" Male Thread x 1/4" Male Thread: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific
Parker VS271NTA-10-8 Air Brake D.O.T. Compression Style Fitting for J844 Tubing-NTA, Tube to Pipe, Brass, Compression and Male Pipe Run Tee, 5/8" and 1/2": Industrial Pipe Fittings: Amazon.com: Industrial & Scientific