To improve suppressing a braking creak by providing a fine powder body which is arranged on the face opposed to the face facing a shim in an elastic member and is provided with a maximum length of a specific value or more.

When a piston 21 is pushed, a pad 31 is moved toward a disc rotor via a shim 41, and the pad 31 is brought into contact with the disc rotor, and as a result, a braking action is generated. In this braking time, the pad 31 is vibrated because of the contact with the disc rotor, and this vibration is transmitted to the piston 21 via the shim 41. However, fine powder bodies 51 whose maximum length is set to be 10-120 μm is arranged between a thin film 53 and the pad 31 and between the thin film 53 and the piston 21, and when pressing force from the piston 21 and reactive force from the pad 31 are applied, the thin films 53 are greatly deformed elastically because of influence of the fine powder bodies 51. Therefore, vibration of the pad 31 is absorbed by means of great elastic deformation of the thin films 53, and as a result, a braking creak can be suppressed.