[Clamp] See title. Well made, metal and sturdy construction. I would definitely recommend this smartphone mount which screws into 1/4 inch tripod mount. Also base also acts as an Arca plate to mount on my ball head. Excellent purchase.

[1x Cold Shoe] Needed to mount an rc pan tilt head that came with a 1/4-20 so needed just this thing and give it here with 1 search. The base has very nice oil-damped leveling, feels both solid and smooth

[Plastic, Rubber] With the Arca-Type base, it works perfectly on your tripod. Spread the base and you have a stand-alone holder for your phone. Supplied with a hex wrench for easy maintenance of the stand's articulating arm. If you have one of the most recent cell phones you need this to take advantage of their cameras.

[0.13 lb] All metal and very strong. Great Price!

[Plastic, Rubber] It's metal, sturdy, and allows you to mount your iPhone to a tripod. I've been impressed with it so far.

[1x Cold Shoe] Bought this for my tripod , for night shooting at the Ventura Parade of lights. Very substantial, very functional. Easy to use. Thanx

[1x Cold Shoe] This is be best tripod adapter I have found to attach my Galaxy S III to my HandlePod tripod alternative support. It is adjustable to take any size phone with any case so I can share it with friends. It is well made and reasonably priced.

[Clamp] Holds my iPhone 12 Pro Max easily. Attaches to any size tripod with an Archa-Swiss mount. Comes with a hex wrench so you can adjust the ease with which it articulates from a base. Compact and built like a tank!

[Plastic, Rubber] There are a lot of flimsy smartphone tripod mounts out there, but this mount is worth the (minimally) more money. It folds down to a small rectangular piece of metal, easily fitting into a small production bag. Once unfolded, it easily adjusts to the size of your smartphone. The design securely holds your phone and a wireless receiver for your microphone or a light. Please note: Order the ST-03 and not the ST-02S. The latter doesn't fold. If you are into serious mobile video with your smartphone, you should purchase this mount. By the way, order it through B&H. I ordered the ST-02S by mistake and B&H made the exchange. Their customer service is why you should shop with them. I have used B&H for many years and they have never disappointed.

[Clamp] The Ulanzi ST-03 Folding Smartphone Tripod Mount (Black) is a great holder for your phone. All metal construction and nicely finished. It will adjust open to around 4.4 inches and when you tighten down the adjustment bolt it stays tight and holds your phone very well. I use mine to have my phone with me while outside and it gets knocked over/falls over but the phone does not come out of the holder. The unit folds flat for easy packing into my backpack also. I really like this item.