Each hooks can change to fit in the bore diameter.
Hooks used the serrate surface design to avoid came off.
Adjustable Jaws Type.
Connected 1/2? Dr. wrench in the end of hold the pulley.
WARNING: California prop 65 - This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/