4" Stroke Linear Actuator 12 Volt 12V 225 Pounds lbs Maximum Lift,Black

--12 Volt DC, 4" Extension.

--225 Pound Max Lift.

--Speed: 10mm/Second

--Retracted length: 8.13"(205mm)

--Extended length: 12.13(305mm)

--DIAMETER of Mounting hole: 0.256"(6.5mm)

--DIAMETER of Shaft: 0.79"(20mm)

--Wiring included, pre-installed.

--Black finish

--Built-in clutch prevents over-extending and over-compressing.

Professional Installation is Highly Recommended (No Instruction and Wiring Diagram Included)