The york commercial 2 x 10kg 22lbs rubber hex dumbbells incorporate rubber coated heads that ensure safety for nearby equipment and flooring their heads are torque threaded to provide permanent fixing to the handles while the anti roll safety design stops them from rolling away when not in use the dumbbells also come with chrome plated knurled steel handles for a secure and comfortable grip they are perfect for performing biceps curls lateral or frontal movements that challenge the arms