A fishing reel handle assembly has a handle arm, a knob shaft, and a handle knob. The handle arm is relatively non-rotatably attached to a distal end of the handle shaft. The knob shaft is fixed to an end of the handle arm and extends in parallel to the handle shaft. The handle knob is supported by the knob shaft to be rotatable relative to the handle arm. The handle arm includes a main body and a convexo-concave portion. The main body extends substantially perpendicular to an axial direction of the handle shaft, and is formed by laminating sheets of prepreg. The convexo-concave portion is convexly or concavely formed on at least either a front surface of the main body or a back surface of the main body. The front surface allows the handle knob to be attached thereto, the back surface disposed opposite to the front surface.對於釣魚用捲線器的操作桿組裝體,可達成操作桿臂的輕量化,並且可有效維持手把軸方向的強度。操作桿臂(21),具有:藉由朝與手把軸(20)交叉的方向延伸並將複數碳預浸料(30)(預浸料的一例)層疊而形成的本體部(21a)、及在裝設有操作桿把手(23)的本體部(21a)的表面(外側面)使成為凸形的方式形成的凸部(21b)、及在裝設有操作桿把手(23)側的相反側的本體部(21a)的背面(內側面)使成為凹形的方式形成的凹部(21c)。2...操作桿組裝體20...手把軸20a...平切面部20b...公螺紋部21...操作桿臂21a...本體部21b...凸部21d...貫通孔21e...非圓形孔21f...貫通孔22...把手軸23...操作桿把手24...螺帽構件24a...母螺紋部25...擋板25a...卡合孔25b...貫通孔26...擋板固定構件26a...非圓形孔26b...螺孔27...螺栓28...齒附墊圈29...墊圈
