Used these to construct some headphone cables. Soldering terminals are a bit on the small side, but found these easy to solder nevertheless. Comes with two strain relief chucks for different cable diameters. Quality seems to be excellent, would have no problem using these where I'd use Switchcraft mini XLR connectors.
Thomann says 6mm max cable diameter, Rean web site quotes max 5mm with the larger strain relief chuck. Using these with 4,7mm diameter cable, and it's a tight fit, so I'd be inclined to take the maximum diameter quoted by Rean seriously if you want the connector to close properly.