Xiamen Shouxi Sports Tech Co., Ltd. is a leading manufacturer, supplier, and factory of high-quality fitness equipment, and our 4kg dumbbells are among our best products. Designed to cater to the needs of fitness enthusiasts, weight trainers, and bodybuilders, our dumbbells are versatile, durable, and easy to use. Our 4kg dumbbells are perfect for beginners, but they can also be used by experienced trainers as part of their workout regimen. We use only the best materials and manufacturing techniques to ensure that our dumbbells are reliable and long-lasting. With these dumbbells, you can work your arms, chest, back, and shoulders, and build your strength and muscle mass in the comfort of your own home. Whether you are trying to get in shape or are looking to take your fitness routine to the next level, our 4kg dumbbells are an excellent choice. So, if you're looking for the best dumbbells on the market, look no further than Xiamen Shouxi Sports Tech Co., Ltd.