In a reciprocating-type electric shaver, an inner blade has an attachment groove which is open downward in a lower end of a side edge. An inner peripheral portion of the attachment groove has an engagement groove which is recessed in an in-plane direction on a wall surface of the side edge and in a longitudinal direction of the inner blade. An inner blade base has a projection at a position corresponding to the attachment groove. The projection can be elastically deformed in the in-plane direction on the wall surface of the side edge and in the longitudinal direction of the inner blade, and is formed so that an engagement claw disposed in a distal end of the projection can enter and engage with the engagement groove. The engagement claw engages with the engagement groove, thereby causing the inner blade to be fixed to the inner blade base.

A fixed blade and a method for manufacturing the fixed blade are provided. The fixed blade includes a base sheet. A blade teeth set, which consists of a plurality of cutting teeth, is provided on an edge of at least one side of the base sheet. A material removal groove is provided on an upper end face and/or a lower end face of the base sheet, such that a thickness of each cutting tooth of the blade teeth set is smaller than a thickness of the base sheet, and such that a tooth protrusion is formed on an upper end face and/or a lower end face of a tooth tip of each cutting tooth of the blade teeth set.