Review on 🔧 Lime2018 110PCS Copper Fitting Ferrules: Superior Quality Connectors for Plumbing and HVAC Applications by Timothy Cole

This is not a crimp termination. The wall is too thin, about 0.2mm, which is not enough for adequate mechanical strength and good electrical contact. A typical crimp connection has a wall thickness of about 1 mm. Instead, buy a ring end of the wire and cut off the ring part.