Cement friendly adjustable dumbbells, the outer layer is wrapped in high-quality rubber, which is resistant to falling, slagging, and will not smell; the interior is cement mixture; the color is black; specifications: kg 10kg/15kg/20kg/25kg/30kg/40kg/50kg/ 60kg can also be used as a barbell, or it can be removed separately for exercise; LOGO can be customized; fine workmanship, wear-resistant, safe and firm, does not fall off, does not damage the floor, durable, comfortable to handle, easy to use; we can provide samples