The material of this product is cement iron sand + PVC .40cm full foam connector. Thickened 6mm foam for effective pressure reduction, cushioning comfort and safe pressure reduction. Reduce the extra exercise burden. It can be assembled into dumbbell, barbell, Kettlebell and push up support. One machine can be used for multiple purposes, with safety ring and environmental protection; Double safety anti loosening nut. Exercise your muscles in all directions, stretch your latissimus dorsi, exercise your chest muscles, exercise your arm muscles and exercise your abdominal muscles. Ergonomic grip: upgrade the screw rod, the thread is more smooth and tight, and the floating-point anti-skid texture grip rod is more suitable for the palm. Easy disassembly, anti-skid grip bar, barbell, dumbbell, kettle bell, three functions, upper nut, adjustable weight, safe and stable. PVC safety shell, no damage to the floor, wear-resistant and anti-skid. High cost performance, low price and excellent quality. Fitness exercise is the first choice. Let sports become a kind of enjoyment. It is produced by the manufacturer with guaranteed quality and short delivery time.