


B100 Rollerball Pen
Pentel's B100 rollerball is an icon of Japanese industrial design and a pioneer in its category. Introduced in 1972, the B100 was the world's first water-based pen. In a market that was dominated by oil-based, viscous ballpoints with metal ball tips, the B100 had few precedents.
The B100 design is defined by two features that were groundbreaking at the time of its release: its free-flowing, saturated ink and its resin ball tip. The ink makes satisfying, dark marks in three colors, and the resin tip is slightly flexible, so you can actually vary the line width by changing your hand pressure. This makes the B100 an unusually responsive writer, even in today's pen market.
Because the resin tip depends on softness in the writing surface to work smoothly, we recommend using the B100 in a notebook or on a stack of paper, not with a single document on a hard surface. If there isn't enough flexibility in the surface, the ball is pushed too hard into the pen, leading to skips and scratches. But if you simply put some extra sheets behind your writing surface, you'll really see this pen shine.
Unchanged since its release 50 years ago and still popular today, the B100 is a great, inexpensive pen for any desk. Sold individually; please select your color from the drop-down menu. Made in Japan.
Product number(s)
4902506390134
4902506390127
Looking for a bit more information about shopping at St. Louis Art Supply? We're glad you asked!
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Free U.S. Shipping Over $59
We're pleased to offer free shipping to any U.S. address (including Alaska and Hawai'i) for orders over $59.
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Shipped Quickly from St. Louis
Our efficient, centrally-located warehouse in Missouri ships orders within one business day. Unlike a lot of online retailers, we operate our own warehouse — we wouldn't trust your art supplies to anyone else.
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Real People, Here to Help
Any questions? Please reach out to our friendly customer service folks at hello@stlartsupply.com. We're art supply experts and we're happy to assist.
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Real Pictures
Almost all of our images are shot right here in our St. Louis studio. We never generate content or images with AI.
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Quality Pledge
We only stock materials we'd use in our own studios. Every product is tested in St. Louis and continually evaluated for quality and value. We're never afraid to discontinue an item that misses the mark.
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Trusted Since 2015
We've been in business since 2015 and we've shipped hundreds of thousands of orders. We use bank-level encryption to protect your data and excellent packaging to protect your supplies.
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FAQs
Even more info about us here
How quickly will my order ship?
Our St. Louis warehouse team is pretty speedy! We generally ship orders within one business day of receiving them. You'll receive a tracking number by email as soon as your order's packed and out the door.
How long will it take to arrive?
We offer shipping estimates for each order at checkout. Please note that these are only our system's best guess — there are many factors that may affect shipping time.
Generally speaking, our parcels take about 2-3 business days to travel to most U.S. addresses once they are shipped.
In a hurry? We offer expedited shipping options, including overnight shipping, at checkout.
IMPORTANT NOTE: We never guarantee delivery dates because carrier delays are not within our control. We do not issue refunds due to delays in transit.
Do you accept returns?
Yes — we accept returns of unopened, undamaged items within 30 days of receipt.
If your return is because we made a mistake, we'll pay for the return shipping label. If you're returning an item because you changed your mind, return shipping is at your expense.
Read our full return policy here.
Is there a physical store?
Yes, there is! We'd love to see you at our St. Louis retail store. We're in the Grove neighborhood, near lots of fun places to eat, drink, and shop.
Do you offer wholesale or bulk discounts?
We do! Educational and institutional customers can email hello@stlartsupply.com to place a discounted bulk order. Send us a screenshot of your Blick or Amazon cart and we'll do our best to match it. You can always finish checking out with the big guys if we don't have a great bid for you.
If you're buying for a retail store, we'd love to meet you! Please head over to our wholesale division, Federal Color. You'll find our wholesale catalog and application there.