The claws are difficult to fit inside when tightened.

Application
Auto Pitman Arm Pulling
The claws are forged for durability.
Comes with a "fall prevention string" for safety in mind.
When tightened, the claws will dig into the inside.

Precautions
Please do not use tools for anything other than intended purpose. Please do not use if you notice any abnormalities such as cracking, chipping, wear or deformation. Do not work in an excessive posture. Please do not modify it.

From the Manufacturer

KTC Pitman Arm Puller PAU-3747

Tool for pulling out the Pitman arm.Rows are forged and heat treated for durability.The claws are difficult to fit inside when tightened.Compatible with Pitman outer diameter diameter of 1.5 to 1.9 inches (37 to 47 mm).