UTEBIT Camera Screw 1/4 to 3/8 Adapter Thread Adapter Set Camera Spigot Convert Mounting Screws Tripod Screw Compatible for Magic Arm Crab Clamp Ball Head Monopod Light Stand Quick Release Plate

Good morning quality, nice packaging.

The items I received were exactly as the listing implied - four "barrel" type adapters, eight 1/4" to 3/8" thread adapters, four male/male thread adapters, two of which have 3/8" Whitworth threads on one side, the remaining threads being 1/4" Whitworth. At the price (approx six pounds) I rate these adapters as excellent. The quality of the 1/4-3/8 threaded sleeves is as good or better than any I've bought before. The male/male threaded things are OK.The barrel/spigot things are turned aluminium, with a 3/8" female thread in one end and a 1/4" thread in the other. OK, aluminium isn't as tough as brass, but it's perfectly OK for the purpose provided that you don't put excessive loads on them, particularly on the smaller thread. They will take marks from clamping screws, especially if the screws have sharp edges (see rightmost spigot in my first picture), but at the price, this doesn't concern me.In the second picture, I've included a Manfrotto brass spigot, for comparison. Someone pointed out that the aluminium ones supplied here have wider non-recessed ends, and therefore don't clear clamping screws that are close to the bottom of the hole in which they sit, for example in Manfrotto SuperClamps. The thing is, neither do Manfrotto's brass ones. The thing that's meant to go in that hole on a Manfrotto SuperClamp has a very shallow "end" and a conical bearing surface for the clamp screw, so that it is pushed down as well as clamped. A proper Manfrotto arm, intended to fit in a SuperClamp, is also shown in my second picture, and you can see where the clamping screw has bitten it. If you must put these spigots directly into a SuperClamp, then if anything, the aluminium ones work better than the Manfrotto brass ones because the clamp screw isn't bearing on the very edge of the thicker end section, like it does on the brass ones. The aluminium spigots are slightly shorter overall, and also don't have a flat on the narrow section - if you need that, it would be easy to file one.All things considered, at the price paid, I'm more than happy with this set. I needed the thread adapting collars, everything else is, for me, extra. I don't have much use for the male/male adapters, except maybe to join two of the spigot/bobbin things to make a longer one, sometimes.

I was looking for 15mm OD as marked in the listing unfortunately they are 15.4 mm. a little under 5/8ths which is fine for a light stand but a bit too much to fit a 15mm rod clamp. Some out there are 15mm OD i have a couple which are now being used on a LWS camera rig, i wanted more of them but these are too big unfortunately which is a shame as i chose this listing based on the product listing.

Just what was needed. Great item

Used to mount IR lightbto camcorder ( via tripod mount) worked great

I keep some of these in my camera bag to be able to mix'n'match between camera and tripod.

the variations here help a lot for all situations

Well machined parts, good