1-2 of 2 Answers
Tip Color/Outer Diameter/Inner Diameter Yellow 2.5/1.0; Black 3.0/1.5; Red 3.5/2.0; Yellow 4.0/2.0; Black 5.5/1.5; Blue 5.5/2.0; White 5.5/2.5 Inner contact is Positive, Outer contact is negative and they cannot be inverted.
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