A dual-bearing reel includes a reel body, a spool shaft, and a spool body. The spool shaft is rotatably mounted to the reel body. The spool body is non-rotatably mounted to the spool shaft. The spool body has an insertion hole. The spool shaft is inserted into the insertion hole. The spool shaft has an insertion region. The insertion region is inserted into the insertion hole and is disposed to oppose a surface of the insertion hole. The insertion region has a first region and a second region. A first gap is disposed between the first region and the insertion hole. A second gap that is smaller than the first gap is disposed between the second region and the insertion hole.提供一種釣魚用捲線器,可以提高對於捲筒軸的捲筒的定位精度,且可以將捲筒及捲筒軸確實地固定。本雙軸承捲線器(10),是具備捲線器本體(11)、及捲筒軸(20)、及捲筒(14)。捲筒軸(20),是可旋轉自如地裝設於捲線器本體(11)。捲筒(14),是不可旋轉地裝設於捲筒軸(20)。捲筒(14),是具有插入孔(64d)。在插入孔(64d)中,捲筒軸(20)被插入。捲筒軸(20),是具有被裝設部(120)。被裝設部(120),是被插入插入孔(64d),與插入孔(64d)相面對地配置。被裝設部(120),是具有第1領域(R1)及第2領域(R2)。在第1領域(R1)及插入孔(64d)之間是設有第1間隙(D1)。在第2領域(R2)及插入孔(64d)之間,是設有比第1間隙(D1)更小的第2間隙(D2)。D1‧‧‧第1間隙D2‧‧‧第2間隙D3‧‧‧第3間隙R1‧‧‧第1領域R2‧‧‧第2領域R3‧‧‧第3領域14d‧‧‧軸裝設部20‧‧‧捲筒軸64d‧‧‧插入孔115‧‧‧軸本體部120‧‧‧被裝設部120a‧‧‧銷安裝孔
