https://www.cableorganizer.com/learning-center/articles/rj45-plugs-boots.php
Stranded design plugs have a flat blade profile that will punch into the center of the connector and splay the strands, Solid core designed plugs have 2 or more offset teeth that pierce the outer sheath at the sides and straddle the conductor, like a saddle on a horse. Note that the number of teeth does not denote the cable type the plug is used with though, it is the offset of the teeth that matters. If you hear that 2 teeth are for stranded, and 3 teeth for solid, make sure, as the video below demonstrates.
Using a stranded type plug with solid core will likely cut the core itself, leading to poor reliability.
Stranded design plugs have a flat blade profile that will punch into the center of the connector and splay the strands, Solid core designed plugs have 2 or more offset teeth that pierce the outer sheath at the sides and straddle the conductor, like a saddle on a horse. Note that the number of teeth does not denote the cable type the plug is used with though, it is the offset of the teeth that matters. If you hear that 2 teeth are for stranded, and 3 teeth for solid, make sure, as the video below demonstrates.
Using a stranded type plug with solid core will likely cut the core itself, leading to poor reliability.