A component mounter including a conveyance device configured to convey a board and hold the board at a specified position; a supply device configured to supply a component; and two mounting units each including a tool rotation device and a component handling tool. The component handling tool includes a base section and a protruding portion extending in a downward direction from the base section, a first end of the protruding portion attached to the base section at a tool attaching position, and a second end of the protruding portion positioned offset with respect to the tool attaching position in a direction perpendicular to the downward direction. The component mounter uses the component handing tools to simultaneously push a component at two push locations so as to insert the component onto the board.