Specification:

Protects Against Accidental Short Circuit.
Two colors show the status of the battery, red means full, white means empty.
Can be used separately or in combination.
Injection Molded Produce, Not 3D Print.
Increases Safety When Storing and Transporting Batteries.

Package Include:

XT60 Charged Discharged LiPo Battery Indicator Caps Protective Cover X 10 PCS