Banana Female Connector 4mm Jack Pair Chassis Mount

This Electrical Jack set (1 Black, 1 Red) is ideal for building your own charging station or as a 12-24volt power access point for DC power supply applications.

They are designed to pass through wooden or metal facias up to 5mm thick (they are insulated and required a 6mm mounting hole). 

These have 4mm holes to suit 4mm male banana plugs.
Rated to around 10amps.

Spec:
Total length: 15mm
Depth: 10mm
Mounting hole: 6mm