to reduce the friction when moving from the closed position to the open position or vice versa the raised portion 34 can be a circular protrusion on the side of the second piece 14 of the handle when the toothbrush 2 is assembled the raised portion 34 can contact the first piece 12 so that a gap can form between the first 12 and second 14 pieces at least around the areas surrounding the raised portion 34 the pivot 16 can reside on the raised portion 34 the pivot 16 can be in the shape of a semicircle that is protruded from the side of the second piece 14 according to some embodiments the pivot 16 can be mostly or substantially semicircular according to some embodiments the pivot 16 can be a shape that is slightly more or less of a circle than semicircular fig5 shows a cross section of the first piece 12 of the handle in the illustrated embodiment the first piece 12 comprises a first slot 26 a second slot 30 a third slot 32 and a receiving area 24 the first slot 26 can comprise a rotating section 34 and locking section 36 the rotating section 34 can be generally circular as depicted the locking section 36 can be generally a trapezoid rectangle or parallelogram in shape the rotating section 34 and locking section 36 can also be other shapes the shape of the first slot 26 can also be understood with reference.