Heavy Duty Linear Actuator 4" inch Stroke 225 Lb Pound Max Lift 12V Volt DC

--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.

--Silver finish

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

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