portable hydraulicd punching tool: quick and easy to punch hole,use for I steel,U steel,steel plate portable hydraulicd punching toolMHP-20voltage:220 ... :6mmmachine size:500x195x100mmpacking size:545*310*180mmpackage :one pc /metal box /cardboard ctnuse for punch orifice on all kinds of steel ... .accessary with 4 sets round dies:8mm,12mm,16mm,20mm. portable hydraulic punching tool