DH precision vise made of high-quanlity alloy steel DH precision vise with good quality and competence price DH precision viseDH precision vise 1,Made of high-quality alloy steel.The hardness of working surface reaches HRC58-622,The accuracy of vise (parallelism and squareness):0.01mm3,Quickly to clamp and easy to operate4,Used on milling,grinding machine etc