4Pcs 8mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors

Great little shaft collars with flanges. Dimensions were accurate and surface finish is good. They worked so well I got a second set.

Used these for a small robot. Handles a lot of torque and speed without issue.

Perfect fit to scale up the axil on small motors

Would have given five stars, but once installed they were off just a bit had to flatten on lathe to run true. Well worth buying if not needing perfect true. Would buy again. Also would be nice if added at least two extra set screws.

I needed a flange for mounting a plastic fan unit that came with a flimsy flange molded in, that had failed. I dremelled out the old flange and added one of these metal flanges attaching it with screws and glue Bonus It comes with an allen wrench of the right size for the tiny set screws supplied

Used these to make a couple of lure turners. Worked very well. Solid and seem durable. Great value

Exactly what I wanted

These are excellent couplers . They are well balanced , centered and stout.

Nice quality, used to attach to output 14m shaft of worm gear reducers (after removing key) etc.

Fits the three 8mm rods that I needed them for. Threaded screw fits properly and snugly. I had a bit of a laugh in that the resealable package ("ziploc" style) was heat-sealed shut BELOW the reseal, so after breaking the heat-seal (cutting it off) you couldn't reseal it anymore.

Arrived as described

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

so, 3 on 4 couplers are working.. the one with a bad tapped hole have the screw stalled in it at mid point (can’t to go deeper and can’t to remove).. the kit received contain 2 extra screws and happy of it.. so, one star less for bad tapped hole..