Saker Twister Arm Trainer, 40-100lb Adjustable Chest Workout Equipment, Arm Trainer, Twister Arm Trainer, Portable Power Twister Bar, Detachable Design Fitness AnywhereUnique full upper body fitness equipmentTwister Arm Trainer as your personal workout trainer and helping you get a killer chest workout, Through the training guide chart. Strength bar work multiple muscle groups with precision, including chest, arms, biceps, abs, shoulders and back, and thigh muscles. Mulit functional strength training machineThis muscle training bars is different from a traditional arm workout bar in that it stimulates more muscle