2mm Male Bullet Connector - High Quality Electrical Connectors for RC Cars, Drones, and DIY Electronics Projects | Secure and Durable Power Connection Solution

This is the connector that would plug into your 2s batteries balance port (if your battery uses bullet connectors).2.25mm diameter shaft: ensures a snug fit for a better connection3.5mm diameter head: allows easy soldering for up to 16 awg wire10mm shaft: promotes lower resistance and a better connection