Two parts of liner hanger: body and running tools 

Application: 
Mechanical Liner Hanger
Mechanical liner hanger is installed on the bottom of the casing. It includes ‘‘J ‘‘ type keyway, they connect with together by lifting, rotating, and pressing. 

Hydraulic Liner Hanger
After putting into a ball to accumulate pressure, the pressure force the liquid to drive piston, once liquid pressure increasing into 11-12 Mpa, the hydraulic cylinder pin will be cut, and hydraulic pressure continue to push piston upward to make the rod and slip raise onto the cones, the liner pipe fix on the casing closely by clamping. All successive movements complete hanging and connecting.