Allied Machine & Engineering S.C.A.M.I.® Roller Burnishing Tool, Metric Short Length Through Hole, Series: H Series, 8.66 to 9.16 mm Diameter, 41 mm Burnishing Length, Straight Shank, 12.7 mm Shank Diameter, 38 mm Shank Length, Applicable Materials: Free Machining Steel, Low Carbon Steel, Medium Carbon Steel, Alloy Steel, High Strength Alloy, Structural Steel, Tool Steel, Copper and Alloys, Brass, Bronze, Bronze Phosphorous, Aluminum and Alloys