A male Nylon XT60 connector, for using to power connectors in LiPo battery powered blasters. Genuine Hextronik XT60s, made with Nylon and gold plated contacts. Be careful when you solder these not to melt the plastic and misalign the pins. One way to prevent this is to plug it into a spare female connector while soldering. DO NOT USE YOUR LIPO FOR THIS, you will probably short the pins with your soldering iron.