upwardly projecting locating studs 20 are snugly respectively received in and pass through the spaced generally circularly formed sections 26 in the razor blade slot 27 the locating studs 20 thus preclude rotational movement for the razor blade 24 and positively position the same in operative relationship in this latter regard when the razor blade is thus positioned in recess 5 the opposed cutting edges 28 and 29 are respectively located in the slots 16 and 17 in such position the cutting edge 28 tangentially extends into the first bore 12 and second bore 13 to define the pencil shaving edges for the same the other cutting edge 29 of razor blade 24 tangentially extends into the third bore 14 to define the pencil shaving edge therein the razor blade 24 is enclosed by the cover 3 superimposed thereon as shown the cover 3 is substantially coextensive with the housing 2 and includes two laterally spaced parallel slots 32 33 such slots are substantially coextensive with the slots 16 and 17 and are equally laterally spaced to be in vertical alignment with such slots when the cover 3 is positioned on housing 2 the slots 32 33 may be of any cross.