CCM PROformance Solid Senior/Junior Ice Hockey Skate Stainless Steel Runner * 1.5 mm was added to the bottom of the runner maximizing sharpening life and generating a tighter push-off angle that maximizes push-off force. * Runner can easily be changed without removing holder from boot: Simply remove the bolts and change the runner. Price is per runner and includes initial sharpening. Be sure to update quantity to 2 when in shopping cart.