Standard 3/8"-16 Female to 1/4"-20 Male Tripod Thread Reducer Screw Adapter (Brass) Precision Made (2 Pack)

I don't know whether these are any different from similar adapters available on eBay, but they are well made and reasonably priced. If you need one of these, it does the trick. I rather like the unplated brass.

These adapters always manage to come in handy. I make videos for the church I work for, and I never know when I'm going to need use a stand that doesn't have the right threads for my camera. These adapters do exactly what they are supposed to do. Great buy.

Ended up buying four of these in order to mount my M50 to my boom arm. Must have, you can do some pretty creative things with these adapters. If you have a light camera you need a few of these.

I needed to use my light stands (NOT tripods) to hold a camera flash, instead of my heavy studio lights. This adapter took the larger light stand screw mounts to the 'standard' tripod screw mounts.SUPER solid and I'll be buying more for my other light stands!

There was nothing to dislike. It was a great value solution to adapt a larger thread to accept a camera.

POOR QUALITY!Threads are POOR: One 1/4"-20 thread would not fit at all; others so loose I question how long the user would be able to use it, including whether or not it would damage the mating piece. NO QUALITY CONTROL. POOR!

Good quality, however the stated 16 mm outside diameter is incorrect, it's actually 15mm. Consequently, I wont be able to use these.

Does what it's supposed to do. That's about all you can ask for with things like this.