The Pica 534/41 Blue Permanent Pen, 1-Pack is a permanent marker pen built for clear, lasting marks on a wide range of surfaces. This is a permanent pen designed for jobsite marking, layout work, and general-purpose identification. Model Number: 534/41, also listed as PA534/41. If you need a blue line that stays readable instead of fading, smearing, or rubbing off right away, this is the kind of marker you keep in your pouch or truck.

The big selling point here is practical: the alcohol-based ink is made to mark on almost all surfaces, and it becomes instantly water- and abrasion-resistant. That matters when your marks need to survive handling, dust, light moisture, or parts moving around before final install. For contractors, mechanics, installers, and serious DIY users, that means fewer do-overs and less second-guessing once the mark is down.

Pica pairs that ink with a 1.0 mm medium tip, which is a smart middle ground for real work. A very fine tip can disappear on rough material, while a broad tip can get sloppy when you are trying to label, trace, or make controlled layout lines. The medium tip keeps the mark visible without getting too heavy for everyday fastening, fitting, sorting, or surface labeling tasks.

This pen is also straightforward in the way you want a permanent marker to be. It is a single-piece marker pen, not a complicated specialty layout tool, so there is no learning curve. The capped design helps protect the tip, the body is easy to carry, and the format makes sense for quick grab-and-go marking whether you are on a bench, in a van, or moving from one part of the site to another.

Another point worth noting is the ink formulation. Pica states that this permanent pen contains no toluene or xylene. That does not change what the mark looks like, but it does matter for users who burn through markers regularly and pay attention to what they are handling every day. You still get a durable permanent marking pen, just with a cleaner solvent story than some old-school marker formulas.

Who is this for? Anyone who needs a dependable blue permanent marker for shop, site, garage, or general maintenance use. It makes sense for tradespeople marking materials, techs labeling components, and DIY users who want something tougher than an office marker. If your work calls for a permanent pen that writes boldly, dries fast, and holds up after the mark is made, the Pica 534/41 Blue Permanent Pen is a simple, useful pickup.

Pica 534/41 Blue Permanent Pen That Does the Basic Job Right

This is the kind of marker you buy when you want a clean, durable blue mark without overthinking it.

• Who it's for: Tradespeople, shop users, mechanics, and DIYers who need a permanent pen for labeling, layout, and general marking on different materials.
• Why it stands out: The 1.0 mm medium tip is versatile, the blue ink is easy to see, and the mark is water- and abrasion-resistant right away.
• Worth knowing: This is a single pen, not a multi-pack, and it is best for permanent marking jobs where you want the line to stay put.

• What kind of tip does this pen use? It uses a 1.0 mm medium tip.
• Is this a permanent marker? Yes. It is a permanent pen with alcohol-based ink.
• Will the mark resist moisture and rubbing? Yes. Pica states the ink is instantly water- and abrasion-resistant.
• Does the ink contain toluene or xylene? No. Pica states this pen contains no toluene or xylene.