The problem of firmly gripping a cylindrical component over a range of permitted diameters is solved by providing a protrusion on the surface of a cantilevered seat, the seat being substantially complementarily curved to accommodate the cylindrical component. In a preferred embodiment of the present invention a clamp for holding a cylindrical component is provided comprising at least one curved seat having at least one protrusion, the curved seat being cantilevered by a first end. The protrusion is configured to contact the cylindrical component under load such that a concentrated load is exerted on the curved seat between a first end and a second end causing the curved seat to be elastically deflected.