Linear Actuator 10 Inch Stroke 225lb Max Lift Output 12-Volt DC Black Steel --12 Volt DC, 10 inch Extension.Black Steel --225 Pound Max Lift. --Speed: 12 mm/ second. --0.79"(20mm) Diameter Shaft --Wiring included, pre-installed. Maximum current draw = 4.6 Amps Maximum Dynamic Load = 225 lbs (900N) Maximum Static Load = 600 lbs Retracted length: 14.13&#034;(359mm) Extended length: 24.13&#034;(613mm) Diameter of Mounting hole: 0.256&#034;(6.5mm) Diameter of Shaft: 0.79&#034;(20mm) Linear actuators are actuators which create motion in a straight line. Unlike a motor, which creates circular motion, a linear actuator can be used with any application that requires moving something in a straight line. Demotor Linear Actuators are a powerful and reliable linear actuator for small to medium loads.