These bits will be your "go to" bits after you try them one time. The quality if the carbide is tops in the industry and overall construction of the bits can't be beat.
Klingspor's Up Spiral Bits combine effective chip removal with a cut that can't be matched by standard straight bits. The computer designed flutes provide the chip removal required in production settings. Up Spiral Router Bits are especially suited for cutting mortices or routhing deep blind holes. These bits are made of solid carbide to give long life and superior quality.