A metal strip can be obtained during A Void Dance by using a Curious tool on a workbench, when you are in the Black Knight Workshop.
Thieving - The RuneScape Wiki
Thieving - The RuneScape Wiki
Gaff, RuneScape Wiki
Metal Press - OSRS Wiki
Thieving - The RuneScape Wiki
All for the Pest - The RuneScape Wiki
Wanted to show some Outdated RS3 models with available or very
Chemist - The RuneScape Wiki
Jigglpex why does my cape look like a counterfeit? can this be
Black Knight guard, RuneScape Wiki
Rusty anchor cellar key - The RuneScape Wiki