The york commercial 2 x 20kg 44lbs rubber hex dumbbells have an anti roll safety design that prevents them from rolling away between sets they incorporate rubber coated heads which makes them safe for surrounding equipment and surfaces the chrome plated knurled steel handles ensure a secure and comfortable grip and torque threaded heads provide permanent fixing to the thick 35mm solid steel shaft the set contains two 20kg 44lbs dumbbells that are designed for light commercial usage