Made from Stainless Steel which resists wears & nicks & will look as good years from now as the day you bought it. The new roller further reduces wear, while adding smoothness to the opening and closing action. The roller engages in a track, ensuring precise alignment. The restyled lever is easier to handle while opening and closing. The closing action is more uniform, closing with the same feel and requiring less adjustment between thicker and thinner parts of the neck.