I use this product with an Acra style quick release plate so that I can use a camera tripod (with a quick release mount) as a light stand in rough on-location shoots where I want extra stability. It works fine for that purpose, but it could be better. The biggest issue is that it does not have a hex or other feature that can be used to hold onto it with a wrench so that you can tighten the 3/8" mounting screw securely - I recommend Loctite.
Manfrotto 088LBP Female Thread to Male Thread Adapter by Manfrotto--this plate works perfectly. I recommend it for any ballhead with a base up to 38mm or 1.5" that needs a plate that will adapt 3/8" threads to 1/4" x 20.
Perfect to mount the Manfrotto Mini Ball Head 494 on a platform having a 1/4-20 Stud.
My ball head mount was designed for a 3/8" x 16 thread connection, and my monopod had the standard U.S. 1/4" x 20 thread mount. This allowed me to mate my ball head to my monopod. Having one specially machined would have cost over $45.
The adapter is very easy to install and remove. Holds firmly. Little over priced.
This little jewel isn't much but it saved me having to have one made. I used it to adapt a hook to the bottom of my manfrotto tripod to attach some weight to add to the stability.
This adapter is a thread size reducer for camera/spotting scope/tripod mounting. I have a few older items that have the bigger thread recepticle, this reduces to match all of my other gear.
I used this to attach a manfrotto 486RC2 ball head with a 3/8" thread to a Leki hiking staff with a 1/4x20 thread sticking out the top. The coupling works flawlessly, and resulted in a VERY versatile, durable monopod.
Solidly built with ample base area.