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Question: Extra info;I was limited characters to ask my question: will the hook-looking part work as a replacement part for the hook that attaches to a beanbag?
Document: I use this to provide a mount for my Garmin Aera 500 aviation unit while in the car as I scavenged a part of the ca mount originally supplied with the Aera 500 for use in the airplane.
If you force it the plastic can crack. I forgot to mention this to a passenger who was going to enter an address for me. The plastic rim that holds the mounting pole in cracked  and the garmin was no longer secure. It was easy enough to fix with a bit of super glue, but its part of the reason I gave 4 stars and not 5.
Garmin Dashboard Mount works very well it moves the Garmin one foot closer, I am very pleased as I now can see it with the bottom of my bifocals when I am looking forward
So far a good stand. I've had it for about 3 months now with no issues. I use it to swap between my work and private car. It's sturdy, decent construction, easy to use... I suggest using industrial strength velcrow for a stand in each car and then just sliding out the ball socket portion.
Got this because the supplied windshield attachment device does not hold well enough. The Garmin kept falling off onto the floor or into my lap as I was driving. This fits on a convenient level spot on the dash of my Subaru Outback and works great. It has not budged since I installed it. It just work.
This mounts directly to my dash on my work vehicle so that it isn't taking up window space. I found that my work car isn't the greatest for windshield mounting. no more issues of the gps falling off! It comes with a couple of double sided sticker pads which seem to have nice strength. I have had no issues with it. I may get another for my personal vehicle.
Pretty nifty little setup. I read some reviews hat the double sided backing didn't hold up well in hot weather. i can't attest to that, as I adhered mine with Epoxy (in a work truck that will probably be driven until it is put out to pasture, so not so worried about the cosmetic damage). One thing I have noticed is that the lock doesn't keep the arm from being rotated/twisted if a little pressure is applied (like when you are attempting to adjust the angle).
I bought this to replace the suction cup mount that came with my Garmin navi unit because it kept falling off the windshield whenever I parked the car outside in the sun.This didn't do any better. I prepped and cleaned the windshield and then stuck this to the windshield. After about three days, this fell off as well. I ended up going back to the suction cup.It may work well for dash mounting where gravity is not working against the adhesive, but wasn't durable for windshield installation.
However, the adhesive is truly permanent and when we got our new RV, we couldn't remove the mount from the old RV without damaging the dashboard finish. So, I was delighted to find that this adhesive mount is still available. The product description doesn't specifically list our model, but it works perfectly with our Nuvi 465LMT (which is also still going strong after 4 years). I think it should work with any 4.3 inch Garmin GPS with ball and socket mounting brackets.
For those that are not happy with there windshield suction mount or just replacement to the suction mount, this dash mount is a permanent alternative.
Answer: Yes, it's an adapter that slides into the mounting plate. In your case the beanbag would be the mounting plate.