Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges |
| Origin | - |
| Brand | Hero |
| Ink Color | Blue-Black and Pure Blue |
| Cartridge Caliber | 3.4mm |
| Package Quantity | 50 Cartridges |
| Target Audience | Elementary Students (Grade 3+) |
| Compatibility | Straight-Liquid Fountain Pens |
| Capacity Type | Large Capacity |
| Material | Non-toxic Plastic |
| Origin | China |
| Item Weight | 120 grams |
Anonymous
Mar 23, 2026
Rating: 5/5
Perfect for my third grader
These cartridges fit our school fountain pens perfectly. The blue-black ink is exactly what the teacher requested, and the flow is very consistent without blotting.
Anonymous
Mar 15, 2026
Rating: 3/5
Good but color varies slightly
The ink works well, but I noticed the shade of blue-black varies slightly between batches. Still usable for homework, just not perfect for calligraphy.
Anonymous
Mar 15, 2026
Rating: 4/5
Solid everyday ink
Does exactly what it says. Good for daily school use. The packaging could be a bit more robust to prevent crushing during shipping, but the product inside was fine.
Anonymous
Mar 08, 2026
Rating: 4/5
Great value bulk pack
You get a lot of cartridges for the price. The pure blue is vibrant. One cartridge had a slightly loose cap, but the rest were sealed tight.
Anonymous
Mar 06, 2026
Rating: 5/5
Reliable Hero quality
Hero has always been a trusted brand in our house. These 3.4mm cores are standard and easy for kids to swap out themselves.
Anonymous
Mar 04, 2026
Rating: 5/5
Smooth writing experience
My son loves how smoothly these write. No skipping or hard starts. The large capacity means we don't have to change them every day.
Q: Can I mix the blue-black and pure blue in the same pen?
A: We do not recommend mixing different ink colors in the same cartridge or pen as it may affect the color integrity and flow performance.
Q: Are these compatible with Parker Quink style pens?
A: No, these are specifically designed for 3.4mm caliber straight-liquid fountain pens commonly used in schools, not international standard converters.
Q: What is the expiration date on these cartridges?
A: Our ink cartridges have a shelf life of 3 years from the manufacturing date printed on the box. They perform best when stored in a cool, dry place.
Q: How many pages can one cartridge typically write?
A: Depending on the pen nib size and writing pressure, one large capacity cartridge can typically cover 15 to 20 pages of standard notebook paper.
Q: Is the ink washable if it gets on clothes?
A: While the ink is non-toxic and safe for students, it is permanent once dry. We recommend washing any stains immediately with cold water.
PISEN Desktop Cable Organizer - Magnetic Data Cord Manager, Soft Silicone Fixed Wire Winder with Adhesive Clips, Mini Portable Hub
$10.10
Handcrafted Peach Wood and Sheepskin Rattle with Brass Jingle Stick – Traditional Chewable Wooden Baby Toy
$74.00
DC Drive DCS550-S02-0050-05-00-00
$10,838.20
Waterproof Storage Bag for Clothes and Bathroom Use, Large-Capacity Drawstring Organizer for Men and Women, Outdoor Travel and Toiletry Pack
$39.90
Steel Speed Bump with Rubber Surface for Cars and Railways
$3,668.00
Huaboshi Thickened Resin Vegetable Planter Box – Rectangular Plastic Balcony Grow Container with Drainage Tray
$45.99
New Data Cable Storage Bag Travel Digital Charger Cord Organizer Protective Visible Multi-Use Portable Case
$1.64
Press Wash Blade for KBA Printing Presses - Model KBA105 Ink Scraper, 1160*40mm
$40.50
Genuine Pirelli Run-Flat Car Tire P7 225 245 275 285/35 40 45 R18 19 20 21
$336.00
Chuangshidai 100XP Compact Desktop Fume Extractor for Soldering Irons - Rapid Smoke Purification
$696.00
Multi-Function Kitchen Sink Rack - Dish Drying Organizer for Bowls and Plates
$33.10
Water Brush Kids Water Painting Book Graffiti Special Pen Water Sketchbook Eco-Friendly Safe Tap Water Refillable Pen Set
$2.16
No-Drill Over-Toilet Storage Rack for Bathroom Restroom Organizer
$8.90
Jingdezhen Blue and White Porcelain Antique Brush Washer, Traditional Chinese Painting Calligraphy Brush Rinse Basin, Large and Small Water Pots
$16.90
Sketch Blending Stump Set for Art Students - Highlight Detail Shadow Tool Kit with Replacement Sponge Heads for Beginners
$9.00
Changyiyou Outdoor Large-Capacity Wheeled Duffel Bag - Thickened Storage Backpack with Wheels for Camping Gear and Travel
$109.00
Lightweight Waterproof Dry Bag for River Trekking and Rafting – Travel Storage for Clothes, Shoes, Socks with Moisture-Proof Buckle, Roll-Top Carry Design
$15.80
Tupai 3D Self-Adhesive Wall Stickers, Custom Acrylic Logo Advertising Letters for Signage, Background Walls, and Image Wall Decor
$8.50
Durable Replacement DEUBLIN 525/357 Water Inlet/Outlet Rotary Union for Curved Surface Printing and Cup Printing Machines
$300.00
Detachable Large Water Barrel Rack for Mineral and Purified Water, Office Bottled Water Storage Stand with Wheels
$136.00
Tea Packaging Gift Box - Empty Ceramic Tea Canister for Longjing, Green Tea, White Tea, Ripe Pu'er, Universal Packaging
$68.00
Ruke Floating Skimmer Machine for Sewage Treatment Plant Biochemical Tanks
$12,064.00
Car Tire Stone Removal Tool Rock Picker Anti-Explosion Hook Stone Cleaner Car Hook Window Breaker Hammer
$2.07
Negotiable Price: Siemens 10mA Leakage Circuit Breaker, 2P 16A Ground Fault Protection
$130.00
Jingdezhen Ceramic Brush Washer Set, Blue and White Porcelain Calligraphy Ink Well and Pen Holder
$14.99
Beishanlang Outdoor Camping Foldable Lighting Stand Aluminum Alloy Portable Lamp Pole Bracket Camp Light Night Fishing Light
$49.00
Mobile Gas Cylinder Stand with Wheels - Plastic Base Tray for Propane Tanks and Water Buckets
$10.65
Fast Grocery Shopping Cart, Foldable Portable Home Trolley with Stair-Climbing Wheels, Lightweight Hand Truck for Seniors
$299.06
Car Tire Stone Hook - Multi-Function Rust-Resistant Tool for Removing Stones from Tires
$8.33
Zunjue 100% Cotton Watercolor Paper Mini Portable Pocket Sketchbook for Travel, 300g Cold Press Thickened Art Notebook for Gouache, Oil Pastel, and Colored Pencil
$3.32
![[Customizable] Blank DIY Bookmarks - Thickened Hard Cardstock in Multiple Sizes with Tassels for Kindergarten and Elementary Art, Calligraphy, and Reading Gifts](https://www.gosteppe.com/cache/medium/product/386159/legacy-main-05a2e5e73e5ac60017fbef5e.webp)
