This is the ProTek RC 5.0mm Super Bullet Solid Gold Connectors (2 Male/2 Female)

This is a pack of two male and two female ProTek R/C 5.0mm "Super Bullet" Solid Gold Connectors. The ProTek R/C "Super Bullet" Solid Gold Connectors are an absolute must for high current / high voltage applications! With lower resistance than a typical T-style plug and traditional spring-type bullet connectors, they are the new standard for brushless applications. They can be used for battery connectors that require a 5mm bullet, as well as motor to speed control connectors.