-Q235 steel, cold forging and quenching technology make the rod durable and sturdy-Chromed surface gives it the desired look and makes it durable-Curved design helps reduce muscle stress-The knurled handles adds friction and grip, and has anti-slip properties-The 47" length and 400 lbs load-bearing capacity help you exercise better-Copper sleeves and bearings solve inertia and prevent wrist injuries-No rust or deformation after 1 year of normal use-Ideal for bench presses, bicep curling, piggybacking, overhead pressure or lunge