Product details 【Strict Quality Control】dumbbells set are manufactured with strict quality control standards. Each dumbbells and its components undergo extensive testing for optimal performance. We always adhere to the principle of customer first, Provide customers with excellent service to ensure that every customer gets the Best Value for Money. 💎【4 in 1 Multifunctional Dumbbell Set】:With it, you can get a pair of dumbbells also barbells, kettlebells, and push-up stands, which help you do many exercises including bench presses, squats, etc. 💎【Durable Materials】: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. 💎【20MM Thickened Foam】: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. 💎【Non-slip Dumbbell Bar】: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. 💎【Safety Nuts】:The sets contain four safety nuts. Nut thread thickening effectively keeps the dumbbell piece solid, to prevent movement shaking. Ensure your safety in use.