20lb Adjustable Weights Dumbbells Barbell Set, Home Fitness Weight Set Gym Workout Exercise Training With Connecting Rod For Men Women

Environmentally dumbbell pieces exterior is made of high-quality PE materials, and the inside is mixed with iron, mud, and sand, which effectively prevents floor abrasion. The connecting rod is made of a 5mm thick steel tube + 20mm thick high-quality foam.Curved design fits the neck, which is non-slip and sweat-absorbing, soft and breathable, bringing a more comfortable exercise experience to you. The surface of the dumbbell bar is made of ABS environmentally material and attached to a non-slip texture, which strengthens the friction of the hand and helps you control the dumbbell better during exercise. The sets contain four safety nuts. Nut thread thickening effectively keeps the dumbbell piece solid, to prevent movement shaking. Ensure your safety in use.