Crimping dies "Wirefy-ICD-F" and "Wirefy-ICD-B1" should be used with 9 inch crimping tool (Wirefy-CRMP-ND-9), as they require higher crimping leverage.
Wirefy Individual Crimping Dies For Insulated Nylon, Heat Shrink Connectors, Nylon Flag, Non Insulated, Anderson, Open Barrel, Ferrule, Coaxial Cable and MC4 Solar Terminals, Miniature Insulated Terminals, Heat Shrink Butt Connectors
Be aware that the dies only fit one of the crimp tools. I inadvertently bought the single die tool and the dies wouldn’t work.
With the 8 piece crimping tool set and the added individual b1 die, I have gotten great results in every scenario I've encountered.
Wirefy Individual Crimping Dies
I can’t say anything bad about wirefy’s products. The dies are accurate and durable.
I only wish they made some more crimping dies that others offers and sold their terminals in in smaller quantities or sold a build your own kit offering for terminals. As well as sold flag and other terminal types.