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They are what they said they were. Moderate quality bulkhead or panel mount female BNC connectors. The overall quality is fine, especially given the price. However, care must be used when soldering the BNC connectors. Use low heat and do not dwell too long at the joint. If you do, you might need remove that connector and try again. It can be easy to hit to connector with a lot of heat or lingering too long around the joint, damaging the tip to shield insulating material. Overall, I like the connectors. They are reasonably priced and work well if installed correctly. However, if you need reliable connectors that can tolerate hundreds of connection/disconnection cycles, I strongly suggest buying higher-quality connectors. If you, (like me) need them for low-frequency, moderate voltage/current uses where you don't need to constantly connect/reconnect cables, you will be served well with this connector.
Not as cheap as the BNC's directly from China but at least you get them in a few days and not a few weeks, Good quality they 2 of them worked very well when I refurbished a 1949 Jackson 640 RF signal Generator. now it has modern BNC probe jacks, not the pestilential old style RCA's
Bulkhead BNC connectors nothing else to say really, good quality and very reasonably priced!!! Great deal!!! Other than waiting for these to arrive from China which by the way takes foreeeeevvvvveeeeerrrrr... happy with these connectors!
Generally this supplier (uxcell) is reliable. But this bag was missing the negative handle ring and the positive pin rotates with an attaching male connector (resulting in a twisting of the soldered wire). They shipped fast and I'll make do, but not fully satisfied with this purchase.