4 Inch Stroke 330 lbs DC 12 Volt Linear Actuator Material: Aluminum alloy Input Voltage: 12V DC Speed: 10mm/s = 0.39inch/s Stroke Length: 100mm/4 inch Load capacity: 750N Pack#4INCH-12V-LINEAR-ACTUATOR Quantity: One Actuator Pack#4INCH-12V-LINEAR-ACTUATOR.
eBay