Deans XT Connectors This is a pair of industry standard connectors. These solder on connectors are ideal for use with batteries which do not come with connectors, or other electrical system RC components. For up to 4mm cable T Style spring connection gold plated, Extra grip exterior for easier connecting/disconnecting Male & Female pairs easy solder connectors.( Heat shrink not Included ) Recommended Heat Shrink SMC-GA-LG-HS04 for up to 4mm or if larger cable used SMC-GA-LG-HS05