1.It is made of high-quality cast iron. 2.The accuracy of vise (parallelism and squareness) is 0.025mm/100mm. 3.It is widely used on planing and drilling machine tools in making some kinds of slots,holes and faces. ModelWidth of jaw (mm)Height of jaw (mm)Max.opening (mm)G.W./N.W (kg)Packing volume (cm)Packing shapeQ12(OB)1361363616015/1443×20×19cartonQ12(OB)1601605117022/2143×20×22cartonQ12(OB)2002006421036/3550×25×23cartonQ12(OB)2502506427051/5062×35×27cartonQ12(OB)3203208135074/7071×38×23carton