A toolholder comprising a cutting head clamping arrangement, comprising: a body comprising a first end and a second end, and an axial opening extending from the first end toward the second end, the axial opening of the body comprising a first portion having a first diameter and a second portion having a second diameter, the first portion of the axial opening of the body being closer to the first end than the second portion of the axial opening of the body and the first diameter being larger than the second diameter; and a rod movably disposed in the axial opening of the body up to a bottom depth in the axial opening, the rod comprising a first end and a second end, the rod comprising an axial opening extending from the first end of the rod toward the second end of the rod, the axial opening of the rod comprising an interior surface, at least one radially extending hole extending radially outward from the interior surface of the axial opening of the rod to an exterior surface of the rod, a ball is disposed in the at least one hole, the axial opening of the body comprising a frustoconical, transition portion between the first portion of the axial opening of the body and the second portion of the axial opening of the body, wherein the at least one hole has a first axial length and the ball has a diameter greater than the first axial length, and extends through the at least one hole into the axial opening of the rod when the rod is at the bottom depth in the axial opening, characterised in that the ball contacts at least part of an interior surface of the transition portion, when the vod is at the bottom depth in the, axial opening. a body comprising a first end and a second end, and an axial opening extending from the first end toward the second end, the axial opening of the body comprising a first portion having a first diameter and a second portion having a second diameter, the first portion of the axial opening of the body being closer to the first end than the second portion of the axial opening of the body and the first diameter being larger than the second diameter; and a rod movably disposed in the axial opening of the body up to a bottom depth in the axial opening, the rod comprising a first end and a second end, the rod comprising an axial opening extending from the first end of the rod toward the second end of the rod, the axial opening of the rod comprising an interior surface, at least one radially extending hole extending radially outward from the interior surface of the axial opening of the rod to an exterior surface of the rod, a ball is disposed in the at least one hole, the axial opening of the body comprising a frustoconical, transition portion between the first portion of the axial opening of the body and the second portion of the axial opening of the body, wherein the at least one hole has a first axial length and the ball has a diameter greater than the first axial length, and extends through the at least one hole into the axial opening of the rod when the rod is at the bottom depth in the axial opening, characterised in that the ball contacts at least part of an interior surface of the transition portion, when the vod is at the bottom depth in the, axial opening.