Replacement for Yellow Jacket 19105 HVAC Cylinder Adapter, 3/4" NPS with 1/4" Male Flare - Made in USA Features 3/4" NPS with 1/4" Male Flare Finger tight adapter fits 125 and 145 lb. cylinders Seal remains seated Material: Brass Made in USA Description The Yellow Jacket 19105 3/4" NPS cylinder adapter with 1/4" Male flare. Finger tight adapters fit 125 and 145 lb. cylinders. Seal remains seated.