The Pica Dry 150/46 Marker for Deep Holes, Black is a specialty permanent marker built for trade marking where regular markers come up short. This is a deep hole marker designed for marking through narrow openings, drilled holes, and hard-to-reach mounting points. Model Number: 150/46. If you install electrical boxes, brackets, pipe clips, hardware, or fixtures, this style of marker saves time because it lets you mark the exact spot without guessing or switching tools.

What matters here is reach. The slim writing tip is made to get down into tight access points that a standard marker body cannot fit into. Based on the provided product data and images, the marker uses a fine 1.5 mm tip and produces a 2 to 7 mm line size depending on how it is used. In practical terms, that means you can make a precise layout mark inside holes and tight channels, then still get a visible mark on common jobsite materials.

The design is straightforward and job-focused. The body is compact, clip-friendly, and shaped to ride in a pocket without acting like a full-size paint marker. The materials listed for the product include a plastic body and felt tip, which is what you want in a marker that needs to stay light, simple, and easy to control one-handed. The twist function shown in the product images is there for a reason: this is made to keep working instead of being treated as disposable.

One of the more useful details is that the marker is refillable. For guys who mark all day, that matters. You get the convenience of a permanent marker with a more sustainable setup, and the tip can be revived by twisting it, which helps extend usable life before replacement. That is the kind of feature that sounds small until you are on a ladder or moving room to room and do not want to grab a new marker every time performance drops off.

The listed surface recommendations include metal, plastic, wood, and glass, so this marker is not locked into one trade. It makes sense for electricians marking box locations and pass-through points, HVAC installers laying out hangers and penetrations, plumbers marking pipe supports, and carpenters or remodelers who need to transfer fastener locations accurately. Black ink keeps the mark easy to see on lighter materials and many finished surfaces.

Who should buy it? Anyone who has ever tried to mark the bottom of a recessed hole with a regular marker and ended up eyeballing it. The Pica Dry 150/46 Marker for Deep Holes, Black is for pros and serious DIY users who want cleaner transfer marks, better access, and a marker that is actually built around installation work instead of office use.

A small tool that fixes a real jobsite annoyance

The Pica Dry 150/46 Marker for Deep Holes, Black earns its spot when you need clean, accurate marks inside places a regular marker simply cannot reach.

• Who it's for: Electricians, installers, service techs, remodelers, and anyone marking through recessed holes or tight openings.
• Why it stands out: The deep-hole format, 1.5 mm tip, and refillable design make it more useful than a standard permanent marker for real install work.
• Worth knowing: This is a specialty marker, not a broad chisel marker for big signage or wide layout lines. Buy it for access and precision.

• Is this marker refillable? Yes. The provided product data lists the Pica Dry 150/46 as refillable.
• What surfaces can it mark on? The listed surface recommendations are metal, plastic, wood, and glass.
• How fine is the tip? The product images show a 1.5 mm tip, which is designed for marking through narrow or recessed openings.
• What kind of line does it make? The product data lists a 2 to 7 mm line size, depending on how the marker is used and the surface being marked.