B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
B24D15/10—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of safety-razor blades
Portable credit card protector - comprises rectangular preventing bending of card plate with auxiliary general purpose functions e.g. cutting and opening