[Electric Actuator Feature] 2 inches stroke, Voltage: 12V DC, IP54 rated Protection Class, 0.6inch/sec fast speed, maximum load: 14.4lb(64N), sealed against dust, waterproof actuator, Less than 55 db low noise. [Material Of Mini Linear Actuator] Built-in high quality aluminum and ABS plastic, sturdy enough and with fashion look. It come with end limit switch that automatically top when the device reaches of stroke, the motor 't burn out. [Safe and Compact Design] 12v Linear actuator with Over-current protection, Short circuit protection, Overload protection, Over-voltage protection design. 0.1lbs/40g weights compact size great for robotics and other projects with tight space requirement. [Multi-Applications] Linear actuators a great pushers used in applications such as agricultural machines and equipment, devices, factory/home automation, material handling adjust, helms and cabinet door, robot's gripper, lift operate tables and other apparatus, adjust the TV antennae, deck chair, window opener, linear servo,solar tracker, extend and retract the cylinder. [Easy to Installation] Electric mini linear actuator are powered by 12 volts DC, Wire up the positive and negative poles in correct, Apply voltage to the device and it extend, reverse the polarity and it retract. Package come with mounting bracketsx 8 to convenient to use. Colour:Black+silver Material:Aluminum alloy Size:50mm Package Contents: 4 x Electric Mini Linear Actuator 8 x Mounting Brackets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.