Engineer's vice 4 1/2" / 115 mm. S.G. ductile cast iron material with high impact resistance ensures stability and long service life (only for engineer's vices). The safety stop prevents the sliding jaw from separating from the body. Machined surfaces on all load-bearing areas allow for smooth and trouble-free operation. The knob with integrated protection bends before the vice is overstrained. The quick-release mechanism disengages the threaded spindle, enabling fast movement of the jaw. The guide nut made of unbreakable S.G. ductile cast iron can be replaced when worn. Integrated anvil for efficient hammering of workpieces, if necessary.