Based on my observations these connectors did not meet my expectations... While the pricing was reasonable, the quality of the product was lacking. The connectors did not crimp effectively and often came loose, causing issues with the circuitry..
I ordered these thinking they were the same as the Ideal 410 ferrules I've been using for years but mine, the supplier no longer offers them . But the ones I received were copper and not steel as shown in the description. I wanted steel.