The present invention relates to a writing tool wherein a writing shaft (502) having a head member (501) is inserted in an outer sleeve (503) in such a manner that the head member is projected from the outer sleeve (503), a stair and a spiral groove (505) are provided on the forward inner surface and the rearward inner surface of a tubular cap, (505a) respectively, an inside diameter of the rear part of the spiral groove is larger, a bearing part (509) which is brought into contact with a lead tank (508) is provided inside a forward part (506a) of the tubular part so that the forward part of the outer sleeve is movable in the axial direction and is locked in the turning direction against an rearward inner surface of the outer sleeve, the rearward part (506b) ot the tubular body (506) is provided with a slit (510), holding pieces of a stickshaped object holder (511) are slidably inserted in said slit, a stick-shaped object (513) is held by the holding pieces, and the projection (514) which is provided on each holding (512) is engaged with the spiral groove of the tubular cap.