★Material: PVC+ carbon spring wireThe handle and spring are firmly connected, metal buckle is used, it is safer, 5 stainless steel carbon steel springs, shiny and shiny.★ Features: detachable design, freely adjustable according to needs, dual-purpose grip design, black and red with curved handle design, fit the hand, more comfortable movement.★ Size: total length 65 cm, spring length 36cm plus hook (due to manual measurement and other factors, the size may have some errors)★ Function/Function: It can help the chest muscles, back muscles, deltoid muscles, and oblique muscles to strengthen the muscles of the chest, back, waist and limbs, and shape the body.Model No: ESG13207