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.
BETOOLL 9-Piece Long Reach Hose Clamp Pliers Set For Fuel, Oil, And Water Hoses - Essential Auto Tools
38 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
168-Piece General Household Tool Set Kit With Plastic Storage Case In Bright Orange By CARTMAN
40 Review
14-In-1 Multitool Camping Accessory Gift Set - Perfect Christmas Stocking Stuffers For Men And Women!
35 Review
β Stainless Steel L-Square, Size 3-Inch x 4-Inch, Zona 37-434
8 Review
TV bracket Kromax DIX-18 black
52 Review
π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 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