... 2.Parallelism 0.005mm/100mm 3.Squareness 0.005mm QUICK ACTION PRECISION MODULAR VISES 1.Made of high- ... adjust pin on body according to openning size,then clamp quickly4.It is widely used on machining center ... chucks,precision tool vises,parallel block series,V-block clamp,etc.Sales covering the USA,Germany,Britain and regions ... 'll be happy to give you details. QUICK ACTION PRECISION MODULAR VISES