Review on Superior Quality and Durability with FPT BARB Stainless Steel: Enhance Your Home or Business with Elegance and Strength by Jose Guevara

Received two fittings that looked fine at first glance. The wall thickness around the hex looked thin but I figured not to worry it was negative pressure. Went for a test landing with matching parts. The first fitting is completely filled with grease, indicating an excessive taper. The second fitting fully engages after 1/2 turn, indicating the cone is too small. They're so far out of spec that you're lucky enough to be able to seal 30psi without leaking (average house pressure). You can certainly roll the dice for a few dollars, but without a return policy I would shop elsewhere.