The photo you posted is a non-insulated connector. The original poster showed a insulated terminal. The insulated terminals use a crimper that just smashes the terminal flat. The non-insulated crimpers will poke holes in the insulation sleeve which defeats the purpose of the insulating sleeve. The terminals the OP posted are Harbor freight/parts store terminals. Better than wrapping a wire around a screw but they are not the best quality. Probably the best terminals are the Micropac terminals with the dual tangs, one pair of tangs grips the insulation and the other pair crimps around the conductor of the wire. Those crimps use a different style crimper and produce a "w" style crimp. This type of crimp is used on most of our Mopars.