The custom made Blue Whale Actuator from Thunderbolt provides a 35mm (1 3/8") (+/-). Push/Pull, Its motor runs on 12 volt power. Most other Two wire gun style design in blue color. 5kgs of force. Working stroke 35mm (1 3/8") (+/-). Mounting holes are 58mm apart. Expected to have 50,000 to 100,000 life-time actuations. Universal Car Power Door Lock Actuator, 12-Volt Motor (1 Pack) | Car Lock - Door Lock Actuator, Unlock Car Door Kit - Door Actuator 12v, 360 degree swivel tip.