Bought these to mark tool ID numbers on steel parts while working. It works very well with mild steel and tool steel, both soft and hardened. Stainless steel is not marked. I haven't tried aluminum or other materials.
IMT 6 Pack Tungsten Carbide Tip Scriber Aluminium Etching Engraving Pen With Clip And Magnet For Glass, Ceramics, Metal Sheet
38 Review
168-Piece General Household Tool Set Kit With Plastic Storage Case In Bright Orange By CARTMAN
40 Review
DURATECH Flare Nut Wrench Set, SAE, 3-piece, 3/8'', 7/16'', 1/2'', 9/16'', 5/8'', 11/16'', High-Quality CR-V Steel, Organizer Pouch Included
25 Review
BETOOLL 9-Piece Long Reach Hose Clamp Pliers Set For Fuel, Oil, And Water Hoses - Essential Auto Tools
38 Review
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review
Triangle Group TR918 225/45 R18 95V summer
61 Review
Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review