SCREW JACKS -Feature- Use with Riser Cylinders for additional height. -Technical Information- Load Capacity(N): 31,800N, 44,900N -Materials- Body: S45C steel, Black oxide finish Bolt: SCM435 steel, Quenched and tempered, Black oxide finish -Datasheet- https://www.imao.co.jp/files/on-cat/pdf/en/bj330-e.pdf