4Pcs 3mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors

Parts look nice and set screws were all present and threaded in perfectly. No complaints.

Bought for a robotics project. All parts included, and the allen wrench. These are cast/milled straight, NOT like some others that are terrible quality. I wish these came in versions with a larger face diameter to choose from...

Ad advertised .. thankfully the holes are all consistent and fit well. Dimensionally they did a good job. I did get thrown that the axis screw was 45 deg off the hub screws but that was my bad and not paying attention.

Product as expected. Machined well. Only issue was that vendor included a 2mm wrench, but the Allen screws are made for a 1.5mm wrench. Set screws are small and some were found in the flange holes. Open carefully.

Very well machined parts. I like that they came with the hex wrench. Nice touch.

I received this item and was very pleased with purchase---however; I checked the package and found only THREE shaft locking screws instead of needed EIGHT--I noted that in my 5STAR review earlier----I have looked further and discovered a small tear in the plastic envelope---only three set screws---my daughter has since looked in the SHIPPING envelope and---found FIVE teeny locking screws deep in the corners of the SHIPPING envelope. So, I hollered before I really looked and owe the seller a 5 STAR complete review, good item, buyer jumped to wrong conclusion!

I've bought multiple sizes and all have been the same quality so I'm posting the same review for all.Inside diameter fits the motor shaft very well and the face is perpendicular to the shaft. The small set screws and threaded holes they go into fit perfect. Even the hex wrench that's included is strong. The parts have no burrs or sharp edges.

These are nice and easy to install. The material holds up well enough. They require a very predictable application, though. I made a tin can bot (The Ravioli-Poli) and used these to fasten the wheels. The jarring and pulling from turning loosened the set screw until both were loose and a wheel fell off. It wasn't stripped tho, hence the positive review. Just consider your application.

Using as part of a router lift.

Son muy buenos, aunque se debe considerar el tamaño con el que se va a trabajar para saber qué medida pedir, lleva todos los accesorios que muestra, los conecte para unas llantas.

These couplers work great and are good quality.

Me gusto los tiempos y el producto es de excelente calidad.

Small but cool