30/60kg men's chest muscle fitness equipment used 50kg.

About Product:Product parameters:\n(1) raw materials: steel spring, steel pipe, ABS.\n(2) elasticity: the elastic force of the central steel spring is greater than 50kg.\n(3) there should be no crack, slag, bubble and other defects that endanger safety. ABS and steel spring, steel tube union is firm.\n(4) corrosion resistance: the corrosion resistance level of electroplated parts is greater than or equal to 5.