Pica Dry 4070 Special Summer Leads Refill Leads are replacement leads for the Pica Dry automatic construction marker system. This is a mechanical pencil refill designed for jobsite marking in warm conditions. Model Number: 4070. If you already use a Pica Dry marker and need refill leads that hold up better in heat, this is the right pack.

This assorted 8-piece refill set includes 3 graphite leads, 3 red leads, and 2 white leads. That mix gives you practical contrast across different materials and lighting conditions. Graphite covers general layout work, while red and white help when you need a line that stands out better on darker or lighter stock.

The big reason this refill pack matters is temperature performance. According to the source data and package information, these summer leads are stable up to 158°F. On real jobs, that means they are a smarter choice for hot weather, sun-exposed work areas, or tools and supplies riding around in a truck during summer. If standard leads get too soft in your conditions, these are the fix.

Pica rates these leads for use on most common jobsite surfaces, including stone, concrete, metal, wood, wet and dry lumber, pvc pipe, wet and dry tile, and cardboard. That wide surface range makes them useful for remodelers, carpenters, tile installers, electricians, plumbers, and general contractors who bounce from one material to the next and do not want to switch markers every five minutes.

The lead size is 2.8 mm, which is the heavy-duty format most users want in a construction marker. It is thick enough for rugged use and visible layout lines, but still precise enough for general measuring, cut marks, and transfer marks. These leads come pre-sharpened, so you are not wasting time getting them ready before the first mark.

There is one limitation worth being clear about: these are not intended for glossy or glassy surfaces. If your day involves slick finished materials where waxy or paint-style markers do better, use the right marking tool for that job. For rougher, porous, dusty, wet, and mixed materials, though, this refill pack makes a lot more sense.

Compatibility is straightforward. These refill leads are made for use with the Pica Dry Automatic Pencil, listed in the source data as PA3030/SB. If that is your marker platform, this pack keeps it working the way it should without changing your workflow.

Who should buy it? Anyone already running a Pica Dry marker who works in hotter environments and wants reliable marks across common building materials. If you mark framing stock, tile, concrete, pipe, sheet goods, or mixed surfaces on active jobsites, this refill pack is a practical consumable, not a gimmick.

Pica Dry 4070 Special Summer Leads Refill Leads are the smart refill for hot jobsites

If you already rely on a Pica Dry marker, this is the refill pack you want when the weather gets hot and the material list keeps changing.

• Who it's for: Tradespeople using the Pica Dry system for layout work on wood, tile, concrete, metal, pipe, and other common jobsite materials.
• Why it stands out: The summer formula, 2.8 mm heavy-duty lead size, and useful graphite/red/white mix make it more practical than a one-color generic refill.
• Worth knowing: This is a refill pack, not the marker itself, and it is not the right choice for glossy or glassy surfaces.

• What is this product? It is a pack of replacement 2.8 mm summer leads for the Pica Dry automatic construction marker system.
• What colors are included? The pack includes 3 graphite leads, 3 red leads, and 2 white leads.
• What surfaces can these leads mark? Source data lists stone, concrete, metal, wood, wet and dry lumber, pvc pipe, wet and dry tile, and cardboard.
• Are these leads good for hot weather? Yes. They are summer leads rated stable up to 158°F.
• Will they work on glossy surfaces or glass? No. Source data says they are for most surfaces except glossy or glassy surfaces.