maximum stability due to high-strength full grey cast iron cast-on pipe clamping jaws with interchangeable jaws the jaws have a knurled and a smooth side and are available as required. absolutely backlash-free movement of the upper and lower part due to precision dovetail guide Safe guidance even when wide open high impact resistance and long service life special jaw safety device therefore no jaw position change and loosening in the case of impact stress Top slide with smooth-running backlash-free spindle drive precisely adjustable Parallelism of the jaws in toolmaker quality also after years of use easy conversion from fixed to rotatable execution rear-opening hammer blow lacquering in blue or green