I'm rather new to action cameras, but am a photographer for many decades.K&F CONCEPT has been one of quality brands in photography and I already own many products from them and I've always appreciated significantly higher product finish & quality as well as more thoughtful designs; And this adapter mount is no exception.First, I bought Osmo Nano for its size and after plenty of review videos, and learned that the latest Osmo Nano and Action 6 cameras use slightly updated QR Adapter Mounts and are NOT 100% compatible with previous generations of DJI Osmo Action Cams. Namely, they are not bi-directional (can mount either front/back side as opposed to the prev. gens only mount one way). So I was looking for the latest gen QR adapter mount, and this is it.As for this K&F QR adapter mount, this is fully made of metal, precisely milled/engineered, and fits my Osmo Nano perfectly. Nice heft to it. The orange-accented clamp buttons look nice. Functionally & aesthetically plenty satisfactory.However, what I mean by "thoughtful design" are in fact what will often decide ease of use and in fact the true usefulness of any product -Thoughtful design 1: I in fact tried other QR adapter mount products also specifically designed for Osmo Nano/Action 6, however, this K&F was the far better than all other competing products. That's when I tried to pressed and release the QR mount. As seen in Pic.11, this K&F mount has clamp buttons that are significant and textured enough to maintain a tight grip - plenty enough to pull away against strong magnetic pull of the adapter mount. Contributes to great great ease of use! It's still made of metal and looking good, too. Whereas competing product (Pic.13, unnamed) has clamp buttons not only made of slippery plastic, but also so small they virtually disappears when you press them, then you'd have to forcefully pull away against magnetism on a slippery surface... such a pain every time. So much more convenient and a hands-down win for K&F.Thoughtful design 2: Another noticeable design choice I'm impressed with is how the action cam mount legs are kept; many other similar mounts had these legs (See Pic.8 vs. Pic.9) made of plastic and often the hinge tension was what kept these legs in either open/close(collapsed) positions. And I'd think when new, the tension wouldn't matter so much, but with use it'd inevitably become loose. In contrast, this K&F adapter legs (while metal, non-magnetic aluminum?) has free hinge with no tension, but has small round magnets incorporated in each legs - to keep them in position when collapsed. This could be a small detail, but will greatly contribute to a long-term consistency & reliability.Conclusion: with full metal construction, top-notch engineering, and versatile & thoughtful design... at much lower price than the DJI's OEM adapter mount, this is not only great value for money, but also my favorite adapter mount for DJI Osmo Nano. Highly recommended!Pic.1-3: Product Box & what's includedPic.4-8: Adapter Mount (Front/collapsed, Back/collapsed, Top with rubber plate, Threaded bottom/collapsed, Front/legs open)Pic.9-10: Mounted on Osmo Nano's Camera module vs. Vision Dock.Pic.11-12: Well-designed Release Clamp Button