HWR's InoTop? hybrid clamping jaw was specially designed for deformation sensitive workpieces in turning applications. Fitted on an standard 3-jaw chuck, deformation-sensitive workpieces are being centred from the outside and and clamped from the inside without any pressure. Thus InoTop avoids the unwanted forming of polygons. HWR's InoTop?-hybrid-clamping-jaw was specially designed for deformation-sensitive workpieces in turning applications. Fitted on an standard 3-jaw chuck, deformation-sensitive workpieces are being centred from the outside and and clamped from the inside without any pressure. Thus InoTop? avoids the unwanted forming of polygons. Low-cost allrounder ? Can be used on all modern machine tools ? Available as manual chuck ? 160-1200 mm ? Available as power chuck ? 160-1000 mm ? No expensive special clamping solutions needed High repeat and roundness accuracy ? Precise production results confirmed in parctice