The Pica Dry 4040 Special Water Resistant Lead Refills, Green/White/Blue, 8-Pack is a refill lead set for the Pica Dry longlife automatic marker system. This is a refill marker lead set designed for permanent marking on wet, glossy, rough, and hard-to-mark surfaces. Model Number: 4040. If you work with tile, stone, metal, glass, or stainless and need your layout marks to stay visible during wet cutting or handling, this is the refill set you buy instead of standard dry-use leads.

What makes these leads worth paying attention to is the jobsite problem they solve. Standard carpenter pencils and basic marker refills can fade, smear, or disappear once water gets involved. The 4040 leads are specifically described as water jet resistant and permanent, which makes them a practical choice for wet tile saw work, stone fabrication, and other applications where spray, slurry, or moisture would normally wipe out a line before the cut is finished.

The 2.8 millimeter lead diameter gives you a visible line without being overly blunt. That size strikes a good balance for rough materials like concrete, stone, cardboard, wood, and rubber, while still being usable on smoother surfaces such as glass, plastic, and pvc pipe. Because the leads come pre-sharpened, you are not wasting time getting them ready before use.

This refill set is also a better fit for mixed-material work than a one-color pack. You get green, white, and blue leads, which helps when contrast matters. White stands out on dark stone and dark tile. Blue and green can be easier to track on lighter surfaces depending on the material finish and dust level. For installers and fabricators, that kind of flexibility is more useful than it sounds on paper.

On the practical side, the leads come in a sturdy plastic box, which matters more than most people think. Refill leads are small, easy to break, and easy to lose in a truck or gang box. A proper case keeps them organized and makes it easier to carry spares to the saw, tile station, or fabrication bench. Source data also notes these leads should be protected from temperatures over 104 degrees Fahrenheit, so storing the case out of direct heat is worth doing.

Compatibility is straightforward. These leads are made for the Pica Dry automatic marker system and are listed for use with PA3030/SB. If you already use a Pica Dry deep hole marker, this pack expands what that marker can do by letting it handle wet cutting and permanent layout work on surfaces that are usually a pain to mark cleanly.

Who should buy this? Tile setters, stone fabricators, plumbers, metalworkers, remodelers, and general contractors who mark on wet or slick material. Serious DIY users doing tile, masonry, or shop fabrication work will also get the benefit. If your marks need to survive water and stay visible through the cut, these refills make sense. If you only mark dry lumber, standard leads are usually the better buy.

Pica Dry 4040 Special Water Resistant Lead Refills, Green/White/Blue, 8-Pack

If you already run a Pica Dry marker and do wet tile or stone work, this is the refill pack that earns its spot in the bag.

• Who it's for: Tile installers, stone guys, plumbers, metalworkers, and anyone marking slick or wet material where normal leads fade fast.
• Why it stands out: The water jet resistant formula and high-contrast color mix solve a real jobsite problem, especially on wet cutting tables and dark surfaces.
• Worth knowing: This is a refill pack, not a complete marker, and it is best used when you specifically need permanent marks on wet or difficult surfaces.

• What kind of product is this? This is a set of special refill leads for a Pica Dry automatic marker, not a standalone marker pen.
• What surfaces can these leads mark on? Source data lists stone, concrete, metal, wood, pvc pipe, glass, wet and dry tile, wet and dry rubber, and cardboard, along with most dry, wet, glossy, rough, and oily surfaces.
• Are these leads permanent? Yes. They are described as water jet resistant and permanent.
• What size are the leads? The refill leads are 2.8 millimeters in diameter and about 125 millimeters long.