A tool holder comprising an insert pocket, a lever pin and a fastening member, the insert pocket comprising: an insert pocket front surface, an insert pocket rear portion, and an insert pocket support surface extending therebetween; an insert pocket top surface, with at least one support wall extending between the insert pocket support surface and the insert pocket top surface; a pocket recess opening out to, and extending downwards from the insert pocket support surface; and a threaded recess opening out to the insert pocket front surface and to the pocket recess, the threaded recess having a threaded recess axis; the lever pin being located within the pocket recess and having a top end, a bottom end and a lever pin longitudinal axis, the lever pin comprising: a head portion at the top end, the head portion having thereon a lever head rear contact surface located above the insert pocket support surface; a lever front surface, extending downwards from the head portion, at least a portion of the lever front surface sloping in a slope angle (δ) relative to the lever pin longitudinal axis, the lever front surface having thereon a lever front contact surface, located downwards from the lever head rear contact surface by a first longitudinal distance; a blind hole opening out to, and extending from, the lever front surface towards the lever pin longitudinal axis, the blind hole located along the threaded recess axis; a base portion at the bottom end provided with a rocker pivot portion to enable tilting of the lever pin about the rocker pivot portion, in the forward-rearward directions (D F, D R); and a lever lower rear contact surface, located downwards from the lever front contact surface by a second longitudinal distance; and the fastening member comprising a first end having thereon a clamping contact surface, a second end, a threading surface extending between the first and second ends (131, 133), and a guiding prong extending from the first end, the threading surface engages the threaded recess, the guiding prong is located within the blind hole, and the clamping contact surface is adjacent to the lever front contact surface; characterised in that the first longitudinal distance is smaller than the second longitudinal distance, the pocket recess extending perpendicular to the insert pocket support surface. an insert pocket front surface, an insert pocket rear portion, and an insert pocket support surface extending therebetween; an insert pocket top surface, with at least one support wall extending between the insert pocket support surface and the insert pocket top surface; a pocket recess opening out to, and extending downwards from the insert pocket support surface; and a threaded recess opening out to the insert pocket front surface and to the pocket recess, the threaded recess having a threaded recess axis; a head portion at the top end, the head portion having thereon a lever head rear contact surface located above the insert pocket support surface; a lever front surface, extending downwards from the head portion, at least a portion of the lever front surface sloping in a slope angle (δ) relative to the lever pin longitudinal axis, the lever front surface having thereon a lever front contact surface, located downwards from the lever head rear contact surface by a first longitudinal distance; a blind hole opening out to, and extending from, the lever front surface towards the lever pin longitudinal axis, the blind hole located along the threaded recess axis; a base portion at the bottom end provided with a rocker pivot portion to enable tilting of the lever pin about the rocker pivot portion, in the forward-rearward directions (D F, D R); and a lever lower rear contact surface, located downwards from the lever front contact surface by a second longitudinal distance; and