I have the 11-inch version of this tripod. It's basically a tripod base with a miniature jointed arm similar to the Manfrotto Magic Arm, except the joint is geared to increase rigidity when it is tightened. The single knob tightens the arm and its two additional ball joints, one connected to the tripod base and one with an Arca-Swiss QR clamp. It's strong enough to hold my Nikon Z7 with a macro lens. Be aware the tripod base does take up a fair bit of footprint once extended (30cm/12in diameter). Great for tabletop macro photography, but you can't completely disregard physics, the camera will vibrate if handled, so a remote control or self-timer is still advisable.
Very Smart design. Perfect 5 stars rating