A metal cutting tool holder comprising a tool holder body, the tool holder body comprising: a first fluid passage extending in a first direction between a first inlet and a first outlet, and a second fluid passage extending in a second direction between a second inlet and a second outlet, wherein the first direction is different from the second direction, the tool holder body comprises a cavity, the first outlet and the second inlet intersect the cavity, and the first outlet and the second inlet are spaced apart, wherein - the tool holder comprises a member being positionable in the cavity such that a curved third fluid passage connecting the first outlet and the second inlet is formed at least partially by the member, Z wherein the curved third fluid passage extends from a first end adjacent to the first outlet to a second end adjacent to the second inlet, the first direction is tangent to, or substantially tangent to, the curved third fluid passage at the first end, and the second direction is tangent to, or substantially tangent to, the curved third fluid passage at the second end, wherein the member has a cylindrical or substantially cylindrical shape, wherein the member comprises a circular or substantially circular top surface, an opposite circular or substantially circular bottom surface, and a side surface connecting the top surface the bottom surface, and wherein a center axis of the member extends between the top surface and the bottom surface, Z wherein a groove is formed in the side surface of the member, characterized in that when the member is mounted in the cavity, a first end of the groove corresponds to the first end of the curved third fluid passage and a second end of the groove corresponds to the second end of the curved third fluid passage. a tool holder body, the tool holder body comprising: a first fluid passage extending in a first direction between a first inlet and a first outlet, and a second fluid passage extending in a second direction between a second inlet and a second outlet, wherein the first direction is different from the second direction, the tool holder body comprises a cavity, the first outlet and the second inlet intersect the cavity, and the first outlet and the second inlet are spaced apart, a first fluid passage extending in a first direction between a first inlet and a first outlet, and a second fluid passage extending in a second direction between a second inlet and a second outlet, wherein the first direction is different from the second direction, the tool holder body comprises a cavity, the first outlet and the second inlet intersect the cavity, and the first outlet and the second inlet are spaced apart, wherein - the tool holder comprises a member being positionable in the cavity such that a curved third fluid passage connecting the first outlet and the second inlet is formed at least partially by the member, Z wherein the curved third fluid passage extends from a first end adjacent to the first outlet to a second end adjacent to the second inlet, the first direction is tangent to, or substantially tangent to, the curved third fluid passage at the first end, and the second direction is tangent to, or substantially tangent to, the curved third fluid passage at the second end, wherein the member has a cylindrical or substantially cylindrical shape, wherein the member comprises a circular or substantially circular top surface, an opposite circular or substantially circular bottom surface, and a side surface connecting the top surface the bottom surface, and wherein a center axis of the member extends between the top surface and the bottom surface, Z wherein a groove is formed in the side surface of the member, characterized in that when the member is mounted in the cavity, a first end of the groove corresponds to the first end of the curved third fluid passage and a second end of the groove corresponds to the second end of the curved third fluid passage.