HIGH GRADE STEEL:Using the high quality steel to finish this main arm bicep blaster,double sping to keep the strength twisting permanent,so you can do your body workout everyday if need.All the material is friendly which compliance CA65.
EASILY EXERCICE:Strength bar trains your chest,back,arm, shoulders, biceps and grip，you get a great worth because you only pay 1 twister bar and gain so so many useful base on this chest expander workout machine.
DIFFERENTS STRENGTH GRADE FOR SELECTIONS: 4 sizes for your choices for further excercice, (S: 30 KG/66 LB, M: 40 KG/88 LB, L: 50 KG/ 110 LB, XL: 60 KG/130 LB),you can try from small to the extra large to get higher drills.
SMART POTABLE DESIGN: 25 inch length for carring, you can take it for work and travelling, to get a exercice rest when you are free. The best friend is for defend if alone, you are enough safe if you take this power bar to keep away from bully.
DAILY GIFTS FOR FRIENDS&KIDS: Smart size design and box packing power twister,it’s a daily gift arm machine for friends and kids. Such utility power spring is more interesting than other toys which can last at least 3 years.