This is what you would expect. They are actually made of brass. The threads are good and clean. Quality control seems to match them. All were identical.
12V Brass Solenoid Valve, 3/4" Electric Air Valve For Water, Air, Gas, Fuel And Oil - Normally Closed By Beduan
10 Review
Vacuum cleaner Dreame V9 Global, white
145 Review
6 Pack Miahart Adjustable 304 Stainless Steel 4 Inch Hose Clamp Duct 91Mm-114Mm Worm Gear Pipe Clamp For Automotive, Mechanical Agriculture.
18 Review
Joywayus 5/8" ID Hose Barb Hex Union Brass Fitting Water/Fuel/Air With 10 Stainless Steel Clamps (Pack Of 5)
13 Review