Review on 🔌 Anderson Metals Female Fitting Coupler by Brent Henderson

I was confused installing a water hammer. The surge arrester was marked "1/4" OD, but its male terminals were 1/4" ID (ID). I couldn't figure out why this female 1/4" ID sleeve was sliding on covered terminals. The male connectors were .43 inches and this female pair is .455 inches. After searching the internet for too long, I put on a mask and headed to Home Depot. The plumber told me that the water hammer absorber has a compression fitting. I went home and found a YouTube video explaining how to connect the compression fittings. Twenty minutes later I installed my water hammer suppressor with no additional parts. So I've never used this brass coupler, but it looks good. :-) My pipe has an inside diameter of 0.25" and an outside diameter of the male thread of 0.43". This coupling has an internal thread diameter of 0.44 inch. It slides right down my pipe without snagging. Obviously there are different "standard" for plumbing, where "1/4 inch" means different sizes. From the indications it should be clear what diameter which thread and on which tube it is wound.