【hardened surfaces 】All surfaces are hardened and precision for consistent accuracy. 【steady】Screw in design makes this machine vise can hold tightly and steady. 【20CrMnTi】This machine vise is made of high quality 20CrMnTi material which is sturdy and 【one piece construction】one piece construction provides stability to drilling operations. 【wide applications】For inspection, grinding and other operations where precise holding is necessary. Such as polishing machine, CNC machine, etc., Weight: 4.6737999544 pounds, Manufacturer: Hilitand