Check the listing for details. Black 4" Stroke Linear Actuator 225lbs (1000N) Load Capacity 10mm/s with Bracket. Condition: New, Made in China. Listed at 48.68 USD. DESCRIPTION --Color: Black --Material: Aluminum --Limit Switch: Built-in --Rating Voltage: 12V DC --No-load Current: 0.6A --Max Load Current: 3.8A --Maximum Load: 225lbs --Speed: 10mm/s --Stroke Length: 100mm (4") --Retracted length: 205mm(8") --Extended Length: 305mm(12") --Normal Temperature Range: -20℃~75℃ --Duty cycle: 10% with full load --Diameter of Shaft: 20mm --Diameter of Mounting Hole: 6mm --IP Grade: IP55 --When the electrical actuator works, it is not noisy with ≦60dB sound. --Built-in high quality limit switch, automatically switch off when it reaches in case of the motor idling. --Commonly used in automotive, medical devices and engineering industry, massage sofa, recliner, TV lifter, lifting table, electric window opener etc. --With mounting bracket.