... use for micro helicopter 3. high quality, competitive price. 4. Plastic case, resist heat. CYS-S0006 micro analog servoWeight: ... 6gSize:21.5*11.8*22.7Speed :4.5V: 0.12sec/60° ... 1kg/cm 6V: 1.2 kg/cmOperating Voltage:4.5-6Volts Feature: Support Futaba, JR, ... boats, rubber must be used to reduce vibration.4, Please choose correct model for your application.5, ...