|Item Weight||0.2 ounces|
|Product Dimensions||3 x 1 x 1.8 inches|
|Item model number||C505-B|
|Number of Items||1|
|Size||Box of 12 tubes - 12 pieces of lead per tube|
|Manufacturer Part Number||C505-B|
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Pentel Super Hi-Polymer Lead Refill, 0.5mm Fine, B, Box of 12 tubes - 12 pieces of lead per tube (C505-B)
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- #1 selling lead in the world
- Each tube of Pentel Super Hi-Polymer lead is made of 100% recycled plastic and part of the Pentel Recycology line of products
- Never needs sharpening and produces a clear, dark line
- Ideal for all general writing applications such as notes, letters, etc
- Refill Fits all 0.5mm mechanical pencils
- Lead packaged in tubes for easy handling
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From the Manufacturer
Pentel Super Hi-Polymer Lead is extremely durable lead that is ideal for high-pressure applications. Independent testing has shown that our lead can withstand up to 123.9 grams of pressure before it will break.
The average human hair is 1,000,000 angstroms in diameter, while the typical lead microspore is only 10 angstroms in diameter. However, Pentel Super Hi- Polymer Lead is just 1 angstrom in diameter. The smaller the microspore, the easier the lead adheres to the surface of the paper for smoother writing.
The way lead is produced has a lot to do with how well it will perform. Lead with too many gaps is prone to break. Lead with too many tight spots will create excess friction and reduce smoothness. Pentel Super Hi-Polymer Lead has an extremely low variance for increased durability and more consistent lines.
Each piece of lead is equivalent to a typical woodcase pencil. Pentel Super Hi- Polymer Lead can write 617 feet per inch of lead.
Pentel Super Hi-Polymer Lead is available in a variety of hardness ranging from 4B (softest) to 6H (hardest). The softer the lead, the darker the imprint, or line produced when writing. HB lead is similar to the lead found in a #2 pencil and is guaranteed to scan on all standardized tests.
Lead Diameter and Line Width
Pentel Super Hi-Polymer Lead is available in diameters from 0.3 millimeter up to 0.9 millimeter. 0.3 millimeter lead produces extra-fine lines ideal for small details. 0.5 millimeter lead produces fine lines great for accounting and general writing. 0.7 millimeter lead is the most commonly used size that is perfect for students and everyday use. 0.9 millimeter lead produces a bold line and works well for those that write with a lot of pressure or have limited fine-motor skills.
These Refill Leads fit the complete range of Pentel Mechanical Pencils. The composition of the hi-polymer lead is synthetic resin, graphite, and carbon, which give a very strong and flexible lead.Each tube contains 12 leads.
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This item Pentel Super Hi-Polymer Lead Refill, 0.5mm Fine, B, Box of 12 tubes - 12 pieces of lead per tube (C505-B)
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|Item Dimensions||1 x 3 x 1.75 in||1 x 3 x 1.62 in||7.25 x 0.5 x 2 in||7.25 x 0.5 x 2 in|
Top Customer Reviews
I write pretty hard, and with HB lead I break the tip a lot, probably 5 times a day or more. With this 4H lead, I break it about once a week.
The 4H lead does write considerably lighter than the HB. This is not a problem for what I do. I can see it just fine, and I actually like it better because the line of your pencil does not get really thick as the lead wears down. The 4H lead always seems to write a finer line.
This pack will last me and everyone I know forever. I use this lead with the Pentel Graphgear 500, and the Pentel Graphgear 1000 pencils. The 1000 is my favorite.
I don't think I've seen anything other than HB lead, but I read a tip to use a slightly harder .5mm lead to keep from having to many breaks.
I ordered 2H and 4H which are both SIGNIFICANTLY harder than your standard HB/2B. You'll probably be unhappy if you are writing on a notebook where you can't put much pressure. If you're on a single piece of paper on a hard surface, it generally works OK.
It'll also likely tear through paper if you try to make a dark line. Just realize it's going to make a very light line if you get a harder lead. Even the 2H is too hard for practical use.
2. As a lead-noob who's always used HB, these have blown me away. I get callus on my cuticles from writing because I have to press hard to get dark writing out of HB leads. I barely have to try with these 3B leads and it comes out nice and dark.
3. My lead has been breaking much less because I don't have to press so hard.
If you write with mechanical pencils and don't know what HB means until you googled it today, you should try this out.