【4-in-1 Multifunctional Design】This versatile dumbbell set transforms quickly into dumbbells, barbells, kettlebells, and push-up stands. It supports a wide range of exercises such as bench presses, squats, curls, and more, making it ideal for full-body workouts at home. 【Durable and Eco-Friendly Construction】Made from high-quality materials including cement and iron sand exterior with PE coating. The interior mix of iron and sand ensures durability while preventing floor damage. Deep grooves provide a secure grip during use. 【Enhanced Safety Features】Includes four safety double nuts with thickened threads to keep weight plates firmly in place. This design prevents movement or shaking during workouts, ensuring stability and safety for all users. 【Comfortable Foam Handle】The connecting rod features a 5mm thick steel tube wrapped in 20mm thick high-quality foam. Curved ergonomic design fits comfortably on the neck, offering non-slip sweat absorption for a soft and breathable exercise experience. 【Non-Slip Ergonomic Bar】The dumbbell bar is crafted from ABS environmentally friendly material with a textured surface that enhances friction. This ergonomic design helps maintain better control during exercises like lifts and presses. 【Adjustable Weight Options】With a detachable design, this set offers flexible weight adjustments: single dumbbells from 5 to 22 lbs, barbells from 8 to 47 lbs, and kettlebells from 5 to 23 lbs. Easily customize weights to match different fitness levels and workout stages. 【Easy Assembly and Storage】Simple installation allows quick setup based on personal or family needs. After use, disassemble easily for compact storage under tables or in small spaces—perfect for home gyms with limited room.