A razor comprising a holder and a blade cartridge, which has a skin contacting surface and is detachably attached to the holder, the razor further comprising: a socket portion, which is provided in the holder and includes an insertion/ejection opening and a manipulation opening; a coupler projection, which is provided in the blade cartridge and is detachably coupled to the socket portion of the holder; a guide portion, which is provided in the coupler projection of the blade cartridge, extends in an opposite direction from the skin contacting surface of the blade cartridge, and is held by the socket portion of the holder; wherein the coupler projection includes the guide portion, a support portion, and a manipulation portion provided at a distal end of the support portion, the support portion is constituted by a cantilever spring having an elasticity and the manipulation portion is provided in the vicinity of an end of the guide portion, wherein, to cancel the holding of the guide portion by the socket portion, the manipulation portion is manipulated at the manipulation opening of the socket portion, so that the blade cartridge is removed from the insertion/ejection opening of the socket portion, wherein the support portion has a step-shaped engagement portion at the distal end, the engagement portion is switchable based on operation of the manipulation portion between a state in which the engagement portion is capable of engaging the coupler projection with the socket portion of the holder through elastic deformation of the support portion and a state in which the engagement portion is capable of disengaging the coupler projection from the socket portion against the elasticity of the support portion, wherein the manipulation portion is exposed rearwardly outside the socket portion of the holder via the manipulation opening, wherein the holder includes a grip portion, which is continuous with a head portion in which the socket portion is provided, wherein the manipulation portion has a pusher surface that extends in a longitudinal direction of the grip portion and toward the head portion and is inclined away from the skin contacting surface, characterized in that the pusher surface is located above the surface of the head portion. a socket portion, which is provided in the holder and includes an insertion/ejection opening and a manipulation opening; a coupler projection, which is provided in the blade cartridge and is detachably coupled to the socket portion of the holder; a guide portion, which is provided in the coupler projection of the blade cartridge, extends in an opposite direction from the skin contacting surface of the blade cartridge, and is held by the socket portion of the holder; wherein the coupler projection includes the guide portion, a support portion, and a manipulation portion provided at a distal end of the support portion, the support portion is constituted by a cantilever spring having an elasticity and the manipulation portion is provided in the vicinity of an end of the guide portion, wherein, to cancel the holding of the guide portion by the socket portion, the manipulation portion is manipulated at the manipulation opening of the socket portion, so that the blade cartridge is removed from the insertion/ejection opening of the socket portion, wherein the support portion has a step-shaped engagement portion at the distal end, the engagement portion is switchable based on operation of the manipulation portion between a state in which the engagement portion is capable of engaging the coupler projection with the socket portion of the holder through elastic deformation of the support portion and a state in which the engagement portion is capable of disengaging the coupler projection from the socket portion against the elasticity of the support portion, wherein the manipulation portion is exposed rearwardly outside the socket portion of the holder via the manipulation opening, wherein the holder includes a grip portion, which is continuous with a head portion in which the socket portion is provided, wherein the manipulation portion has a pusher surface that extends in a longitudinal direction of the grip portion and toward the head portion and is inclined away from the skin contacting surface, characterized in that the pusher surface is located above the surface of the head portion.