Single-ended sensing devices for sensing a programmed state of a non-volatile memory cell are adapted for use in low-voltage memory devices. The cutting tool has a cutting edge on the intersecting ridge line of the rake face and the flank face, and is covered on the surface of the base thereof by a coating layer comprising TiaAlbNbdMe. A second tubular member is then plastically deformed and radially expanded in overlapping relation to the first tubular member.