[Adjustable Hydraulic Resistance from 22 to 440LBS]: This twister arm trainer features an upgraded hydraulic cylinder that allows you to adjust resistance freely from 22lbs up to 440lbs. Simply rotate the cylinder handle to find the perfect strength for beginners or pros.

[Adjustable Hydraulic Resistance from 22 to 440LBS]: This twister arm trainer features an upgraded hydraulic cylinder that allows you to adjust resistance freely from 22lbs up to 440lbs. Simply rotate the cylinder handle to find the perfect strength for beginners or pros.