A high carbon bright tool steel, centerless precision ground to very close tolerances,it is call Silver steel because of its bright finish but it does not contain any silver.
Above 1 in + - 0.0005in.
Below 1 in + - 0.00025in.
Above 25mm + - 0.025mm.
Below 25mm + - 0.0127mm.
Closely controlled analysis for uniform machining properties and consistent response to heat treatment. Chamfered, deburred ends for safety.