CBN Insert, 1/2" Round, 3/16" Thick, Double Sided, TITANIUM-NITRIDE COATED (CBN - Cubic Boron Nitride - SUPERABRASIVE). For engine block and head surfacing, Vertical Milling and Boring. 1/2" CBN Insert - Double-Sided - Titanium-Nitride Coated - 3/16" Thick (WVN819252).
