This thing supports a convenient and gentle way to disconnect 6S balance connectors due to equally distributed traction while exerting force on the connectors lead.
IMHO: I have never understood why this balancer cables are state-of-the-art in the R/C community since they provide a rather fiddly mechanism to safely connect and disconnect LiPos to chargers and other devices or plugs respectively.
Four different sizes are available for various lead diameter:
1) 1.5 mm
2) 1.625 mm
3) 1.75 mm
4) 2.0 mm
A thing is composed of two prints of one respective part. Glueing is not necessary.