Features:- Heavy duty shaper vice sturdy constructed from close grain casting for use on shaper machines, planners & other heavy duty machines permitting wider application for taller work pieces.It is designed to permit maximum opening jaws to hold heavy & taller jobs.High tensile steel square thread screw.The jaws are made of special steels. These are precisely ground & serrated to ensure firm grips on heavy jobs.Swivel base is indexed to 360, when required to use as stationery vice, the base can be removed.Crank handle is made of unbreakable steel, provided with a spring loaded mechanism providing positive grip.