A pinion gear for a dual-bearing reel, the pinion gear is configured to be meshed with a drive gear. The pinion gear includes a first support portion, a gear portion, a clutch control portion, and a plated coating. The first support portion is supported by the reel unit through a first bearing. The first support portion is rotatable and axially movable with respect to the first bearing. The gear portion is configured to be meshed with the drive gear. The first support portion is disposed on a first side of the gear portion. The clutch control portion is disposed between the first support portion and the gear portion. The clutch control portion includes an outer diameter smaller than that of the first support portion and an outer diameter of the gear portion. The plated coating is formed on at least an outer peripheral surface of the first support portion.[課題]不會導致軸承的大型化及小齒輪的強度的下降可將小齒輪圓滑地朝軸方向移動。[技術內容]小齒輪(32),是與將可旋轉自如地設在雙軸承捲線器(100)的捲線器本體(1)的操作桿(2)的旋轉朝捲筒(12)傳達的驅動齒輪(31)嚙合。小齒輪(32),是作為離合器機構(13)的功能。小齒輪(32),是具備:第1支撐部(32a)、及齒輪部(32b)、及頸部(32c)、及鍍膜皮膜(32e)。第1支撐部(32a),是設在一端且透過軸承(38a)可旋轉自如地被支撐於第2轂部(7f)。齒輪部(32b),是可與驅動齒輪(31)嚙合。頸部(32c),是被配置於第1支撐部(32a)及齒輪部(32b)之間,外徑是比第1支撐部(32a)及齒輪部(32b)更小。鍍膜皮膜(32d),是形成於至少第1支撐部(32a)的外周面。32‧‧‧小齒輪32a‧‧‧第1支撐部32b‧‧‧齒輪部32c‧‧‧頸部32d‧‧‧第2支撐部32e‧‧‧鍍膜皮膜32f‧‧‧卡合溝32g‧‧‧離合器卡合部32h‧‧‧貫通孔
