Wrist And Forearm Blaster, Muscle Strength Wrist Roller & Forearm Roller For Training With Soft Foam Grip Handles, Weight-Bearing Rope Training Fitness Equipment Anti-Slip For Gym And HomeSTURDY cONSTRUcTION: Our Wrist Roller is made of heavy duty steel structure to prevent breaking or cracking when used with heavy weight plates THE KINg OF FOREARM..