A one-way clutch for a fishing reel includes an outer race, an inner race, a first roller, a second roller, and a cam surface. The first roller is disposed between the outer race and the inner race, and is disposed to make contact with the outer race and the inner race. The second roller is disposed between the outer race and the inner race, and is disposed to make contact with the outer race and the inner race. The cam surface is disposed on either an inner peripheral surface of the outer race or an outer peripheral surface of the inner race, and is disposed to allow the first roller and the second roller being stuck with the cam surface.The first roller has a coefficient of friction greater than a coefficient of friction of the second roller.本發明的滾子型單向離合器中，儘可能地抑制旋轉手感的降低使滾子不易打滑。其解決手段為旋轉捲線器的單向離合器(32)，具備：外輪(42)、內輪(43)、第1滾子(44a)、第2滾子(44b)及凸輪面(45)。外輪(42)是卡合於轉子(3)。內輪(43)是卡合於制動部(16)。第1滾子(44a)為配置在外輪(42)與內輪(43)之間，可接觸外輪(42)及內輪(43)的至少其中之一的滾子。第2滾子(44b)為配置在外輪(42)與內輪(43)之間，可接觸外輪(42)及內輪(43)的至少其中之一的滾子。第1滾子(44a)與第2滾子(44b)是在周圍方向隔著間隔配置，第1滾子(44a)的摩擦係數高於第2滾子(44b)。凸輪面(45)為第1滾子(44a)及第2滾子(44b)咬入的面。
