The york commercial rubber hex dumbbells 2 x 75kg feature rubber hex shaped ends to diminish the noise and ensure protection for the floors and surrounding equipment the dumbbells come with torque threaded heads that are permanently attached to a thick 35mm firm steel shaft to improve the strength of the headhandle joint they have knurled chrome handles to ensure a comfortable and secure grip while their anti roll design helps prevent the dumbbells from rolling away in addition the du