49119. Carbide Tipped Cove 5/8 Radius x 1-5/8 Dia x 11/16 x 1/2 Inch Shank. The covetto form – produced by the cove bit – is one of the classic building blocks for many molding profiles. Use it alone or in combination with beads and fillets. Use the cove to detail the edges of casework, doors and drawers, posts and columns. The cove also makes up one-half of the rule joint used on drop-leaf tables, the other half is the corner-round.