Players; 'Louise legs' in Al Kharid; Monster drop.
Notes:
Steel platelegs require 3 steel bars and a smithing level of 46 to make. These yield 112.5 experience when smithed. A defence level of 5 is required to equip steel platelegs.
Steel platelegs also spawn in the wilderness in the small caged in area with a furnace and deadly red spiders.