Compatible with Convert Battery with EC3 on Slash, Rustler, Stampede, Bandit, E Revo ESC / charger Package ：4pcs（Same as picsture） Save Time Soldering By Using These Easy To Use Connectors No Wires Less Resistance Than Standard Adapters The connection is very solid and secure,light weight and compact with excellent performance. Ideal to be used to be battery charger adapter for you Lipo battery.