Ihuniu Power Twister Bar Dual Springs Super Heavy Duty for Upper Body Arm Muscle Exerciser (20kg to 120kg Options) (100 KG (Hercules));

Features:
100% New Brand High Quality Original Guarantee
Made by latest safety dual spring-quality carbon steels Second Spring keep much safer when exercising There was a "second" noise when it be released.
Perfect for building upper body strength
High grade steel with molded plastic grips
Until Now Max Springs Power 100KG/220LB to Challenge your Extreme
Specifications:
Materials:Quality Carbon Steel Springs and Non-Slip Plastic Handle
Weight:30kg,40kg,50kg,60kg,80kg,100kg for you choose.
A. Please Make sure you have enough power to use the 50KG or 60KG or 80KG or 100KG Level;
B. Please Make sure your wrist wear the hand strap before training.
Prevent accidental injuries.