[Specification]Stroke length: 2 inches / 50mm; Travel Speed without Load: 9.5mm/s; Load Capacity= 90N / 20.3lb; Input Voltage: 12VDC. [ Material]The linear actuator is made of high-quality aluminum alloy, strong and , not easy to rust, and can be used for a long time. [Compact Design]The mini linear actuator is compact, small in size and light in weight, with short-circuit protection, overload protection, and over-voltage protection design. It is an Perfect equipment for projects such as robot applications. [Easy to Install]The electric linear actuator is powered by 12VDC. Wire the positive and negative poles correctly and apply voltage, the linear actuator extend; Reverse the polarity, it retract. Come with mounting brackets, installation very easy. [Widely Application]Mini linear actuators are widely used in agricultural machinery, engineering industry, factory and home automation, robots, cabinet, industrial electric lifting systems and other equipment. Material:Aluminum alloy colour:Silver+black Package Contents: 4 x Micro-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.