1up Racing LowPro 4-5mm Bullet Plug Adapters make life easy when switching between batteries with different size bullet plug inputs. Install 1up Racing 4mm LowPro Bullet Plugs on your car and simply use these with any batteries that require 5mm plugs.
Our LowPro 4-5mm Bullet Plug Adapters are a must have item in every fully-prepared racer’s pit box! | 
