Dingzhou Hongyu Technology Development Co.Ltd is located in Dingzhou, Hebei province.It’s only two hours’ car drive to Beijing.We have 5 factories ,120 workers and more than 10 years of production experience. We specialize in producing dumbbells, gummed dumbbells, lacquered dumbbells, boxing gear, yoga MATS, 80% of the price of mechanical parts are exported to USA, Russia, Germany, UK, Australia, Greece, Chile, Taiwan and other countries. Our brand "hongyu" can support "OEM". We uphold the "pursuit of excellence, quality first" concept. Welcome to be one of our top "VIP clients".Black round head dumbbells, this dumbbell is wrapped in high-quality rubber with round steel; the specifications are from 2.5kg to 50kg in increments of 2.5kg, and the pound system is 5LB-100LB in increments of 5LB; it can be made into black letters, red letters and white letters, and can be customized here. logo; can be made into round head barbell specifications 10kg 20kg 30kg 40kg 50kg 60kg 70kg 80kg 90kg 100kg