Dumbbell in stock Round head dumbbell Item Round head dumbbell Specific 2.5/5/7.5/10/12.5/15/17.5/20/22.5/25 /27.5/30/40/50 kg 5/10/15/20/25/30/35/40/55 LB Material Cast iron with rubber Color Black Application Exercise area: back muscle 1. On the prone bench, the limbs droop, hold a dumbbell with one hand, and hold the leg of the stool with the other hand, let the upper arm holding the bell...