Roman Carbide 3in Cove Moulding 3-1/2in Dia. 1in Bore DC2200. All cutters are manufactured with C-2 carbide. Package Contents: Roman Carbide Cove Moulding 3-Dia. Bore Roman Carbide DC2200 3in Cove Moulding 3-1/2in Dia. 1in Bore