Aside from one problem, these are perhaps the most useful, well-designed and economical C-stands I've ever seen.Starting at the bottom, it's a turtle style, meaning the center column is removable. This allows for easy transport.But here's the problem: the column's diameter where it slides into the turtle is NOT STANDARD DIAMETER. It's 1.095". It should be 1.125" (1-1/8"). This means standard accessories will not fit into the turtle base.Nothing's more clumsy than a folded C-stand. The best way to transport a standard single-piece C-stand is with a custom cart made for the job like the C-Stand Cart (cart only, stands not included) for only $461. And you'll need a lift-gate truck to move the filled cart about.With two-piece C-stands like this Neewer beauty, you take the center column off, fold up the turtle base and carry them separately on any cart. The turtle base folds using spring pressure detents. The legs, when in the detents, are splayed properly. They don't have a sliding "crazy leg" for uneven terrain like the Avenger A2033LKIT Steel 40-Inch Sliding Leg C-Stand with Grip Kit (Chrome). Use these on flat floors.Because the turtle base does not accept a 1-1/8" column, it cannot be used as a low-boy stand. A gazinta like the Kupo junior-to-baby adapter Kupo Adapter, Junior to Baby, 1-1/8-Inch Stud to 5/8-Inch Stud, KG006312, will not drop it into the turtle base. This is very disappointing. I actually bought a Kupo 20" column so I could have two different heights, but the Kupo will not fit into this Neewer.Moving up is the unique center post. It has two strong internal springs that act like shock absorbers. If you have a heavy light up in the air or a backdrop suspended between two of these stands and some amateur loosens one of the lock handles too much without holding up the weight, the column will certainly slide all the way down. If he's lucky, he doesn't have his hand on the center post because a normal stand will pinch and/or crush it. This stand will stop short and bounce on the spring. The best I've seen on other stands is a thick rubber O-ring that softens the descent only a little. These springs may even save an expensive bulb's filament from damage as the lighting unit bounces off the spring, but does not bottom out. Other stands may have these features, but this Neewer is the first I've seen. Check out the video.There is a neoprene sleeve for gripping the post. It's a good, thick, solid grip that should last.The two extension sections elevate and lower smoothly, controlled by large friction knobs. The castings are solid and well finished with no sharp edges, secured to the center post by a large set screw. An Allen wrench is included should this set screw loosen over time or you want to take the column apart.Moving up to the gobo arm, it's strong steel with a 5/8" spud at both ends. One spud end has a 1/4-20 thread on it and the other end has a 3/8-16 thread on it. With these two threads, plus the 5/8" spuds, you can mount just about anything. Both thread ends are protected by small rubber caps, which you'll probably lose after the first shoot unless you put them in your pocket.The arm has two gobo clamps: one to adapt the arm to the stand and one for holding accessories like scrims, reflectors, softboxes or flags. Both slide the full length of the arm. You can add a set screw (not included) if you desire to lock them to the arm. The clamps have fine-tooth interlocking faces instead of a leather or composite friction washer. If you loosen the clamp knob sufficiently, the teeth will clear each other without wearing themselves off. Once locked together, I cannot imagine the gobo arm sagging and changing its angle, no matter how much the light weighs. Both clamps are nicely finished and have large, easily gripped locking knobs. The tightening washers are well-greased to prevent galling and are shaped like miniature tripod ball mounts -- a cup-shaped bottom fits into a matching cup-shaped hollow in the clamp. This allows the two halves of the clamp to move to accommodate different diameters of flag pins, but still tighten securely. Easier seen than explained.Packaging was excellent: bubble wrap around every piece, then into Styrofoam shipping blocks, then into an inner cardboard box then two of those boxes into an outer cardboard box. I pity the UPS guy who had to deliver the thing, but both stands arrived in perfect condition. I set them up in a few minutes.For about $105 each, the only way I'd be more pleased is if the turtle had a standard socket size. Had to take a star off. And now I have to send back my Kupo 20" column %^$#$$!!