Made of quality steel, hardened to HRC55°-62°,ANGLES 0°~60° capacity.角度调整范围0-60° Minute angle step 0.2 built into the front gauge block roll eliminates steps in base plate. Two end rails and one locking strap included Tapped holes in top. Center distance of tools with 0.005mm(0.0001") V-612S within 0.008mm(0.0003")