The york 275kg 606lbs rubber hex dumbbell features an anti roll safety design that stops it from rolling away when not in use the rubber coated heads ensure safety for equipment and surfaces and are torque threaded to provide permanent fixing to the handles this easy to clean dumbbell has a chrome plated knurled steel handle that provides secure and comfortable grip it is ideal for performing biceps curls lateral or frontal movements that challenge the arms triceps exercises as well as