DeFF 1st Gen Refill Pen Jacket (Aluminum/Titanium Series)
Bestseller that successfully raised over ¥10 million on crowdfunding platforms. It is designed to be the "ultimate shell" for your favorite writing instruments.
Engraving fonts available
1. Montserrat (Click to view more)
2. Great Vibes (Click to view more)
3. Racing Sans One (Click to view more)
4. Big Shoulders Stencil Text (Click to view more)
Pairs well with
DeFF 1st Gen Refill Pen Jacket (Aluminum/Titanium Series)
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Crowdfunded in Japan, raised 2993% over our goal
Japanese Stationery Series - Refill Pen Jacket
Have you ever felt that ball-pen pen leads are easy to write but the pen body doesn't feel comfy or nice enough for formal occasions ?
Smart Refill Pen Jacket is your right choice second to none !
This Refill Pen Jacket is a minimalist yet highly functional multi-purpose pen body, compatible with over 1,000 types of commercially available ballpoint pen refills. Made from stainless steel and aluminum alloy, it has a comfortable, well-balanced weight and offers a smooth, easy writing experience for daily use.
Japanese Designer Brand, Update Your Beloved Ball-Pen
There's a mounting clip inside the Refill Pen Jacket, which can hold the pen nib tightly. The design aims to reduce shaking of pen nib and improve smoothness and stability while writing. While changing pen lead, you only need to unscrew the mounting clip from the pen holder, which is pretty easy.
The pen cover is designed to be cylindrical and has a gradient from thick to thin to improve holding comfort. The holding grip & the mounting clip is made of SUS304 stainless steel; the pen body & the pen cap are made of aluminum (A6063), overall weight only 28.4g.
Well-balanced counter weight, improved writing comfort
The reason why ball-pens can't be written comfortably is because of the weight balance while holding rather than overall weight, and writing comfort usually comes from the counter weight, which the pen head is slightly heavier than the pen body.
Extreme Craftsmanship with High Quality Material
DeFF is a Japanese manufacturer specialized in planning, producing, and selling of metalworking products. We strive to ensure that each product we make can be perfectly presented. While designing, they not only look nice but also practical. The pen cover is made of anodizing aluminum (A6063), which keeps the surface bright and clean and also anti-corrosion; and the pen grip is made of PVD polished SUS304 stainless steel, which makes the pen perfectly weighted and have an overall beauty.
Aluminum / Stainless Steel Version
Titanium / Stainless Steel Version
Titanium metal is very hard to process and requires special method different from steel and aluminum. We now reveal a platinum version adapting all the aluminum parts to titanium material.
Titanium is also called Ti64, a special alloy that is much stronger than pure titanium. It is so highly reliable that is even used for artificial joints for medical use, and also nuclear power, aerospace industry, and so on.
For Multiple Necessities
Ball-pens can be adopted to personal or formal occasions and so on. Many people yearn for taking out a high-quality pen from their suit pocket in front of their customers, but usually fail to take their first step because of its high price and pen leads cost.
But Japanese ball-pens are still popular among people who care a lot about writing utensils. They do perfect job on writing despite their fairly low cost. And with our Refill Pen Jacket, it not only levels up the appearance of the pen, but also improve the comfort while writing.
Using Scenarios
Product Variation
Eco-friendly Packaging
Refill Pen Jacket comes in eco-friendly packaging made from recycled paper and fibers. It is biodegradable, reusable, and printed in a single color to reduce ink use and environmental impact.
User Guide
Product Information
Product Name: Smart Refill Pen Jacket
Brand: Dëff®
Aluminum/Stainless Steel
Model: RP-ST22A-BK (Charcoal Black)
RP-ST22A-GN (Turquoise Green)
RP-ST22A-NV (Sapphire Navy)
Material: Stainless Steel for holding grip & mounting clip
Aluminum for pen hat & pen body
Size: 15.5x1x1(cm)
Weight: 28.4g
Titanium/Stainless Steel
Model: RP-ST22T-GY (Titanium Grey)
Material: Stainless Steel for holding grip & mounting clip
Titanium for pen hat & pen body
Size: 15.5x1x1(cm)
Weight: 37g
Product Warranty
- Product warranty period is 6 months from the date of purchase
- Used refills (replacement refills) are not covered by the warranty.
- Defective new items are valid for 30 days from the date of purchase or the date the item arrives. If there is a
- product defect or parts shortage, we will send the missing parts or replace the product.
