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.
Monet Detail Watercolor Brush Set - Goat Hair Liner, Round Wolf Hair, Flat Oil Painting and Gouache Brushes
$76.00
365-Day Electric Guitarist Development Plan Beginner Introductory Electric Guitar Textbook Self-Study Tutorial Basic Skills Practice
$28.90
Over-Toilet Storage Rack for Bathroom - Multi-Functional No-Drill Organizer
$14.70
Wuxi 3D Five-Axis CNC High-Pressure Waterjet Cutting Machine for Metal, Glass, and Stone Inlay Patterns
$431,980.00
Zodiac Dragon & Snake Rattle Toy for Babies, Sheepskin Drum Head, Solid Wood, Non-Toxic, Chewable, Sensory Grasping Toy for 6+ Months
$14.80
Menghu Custom Plush Squeaky Keychain with Custom Voice - DIY Anime Comic Fabric Mini Pillow Charm
$12.80
Hell Jazz Drumming: Ultimate Drum Skill Training Institute - Complete Rock Drum Kit Manual and Tutorial for Drummers
$58.00
Custom Calligraphy Felt Mat for Chinese Painting and Brush Writing – Wool Felt Desk Pad or Wall Mat for Four Treasures of the Study
$9,022.00
Mini Watercolor Paint Notebook – Compact, Portable, Thickened Sketchbook for Markers, Ideal for Students and Casual Drawing
$7.58
Manufacturer Sales 35-Piece Automotive Repair Tool Set, 1/2" Pneumatic Socket Set, Extended Impact Sockets
$165.00
Portable Invisible Aligner Case for Invisalign and Children's Orthodontic Retainers
$12.50
Paper Blending Stumps Set for Art Highlighting and Sketching, Professional Smudging Tools for Fine Arts Students
$2.65
Sketch Blending Stump and Knife Set - Art Supplies Including Paper Stumps, Makeup Sponges, Highlight Detail Tools, Charcoal Wipers, and Scraper Kit
$4.08
New Children's Potty Training Seat for Boys and Girls
$28.00
FRP Spray Purification Tower for Thermal Power Plant Exhaust Gas Treatment - Desulfurization, Denitrification, Acid Mist Scrubber, FRP Chimney
$680.00
Handmade Natural Gourd Cute Smiley Face Rattle Baby Soothing Toy Safe for Chewing No Paint
$32.30
Baby Wooden Rattle Toy - Chewable Traditional Goat Skin Shaker for Newborn Boys and Girls
$9.80
Yuanhengtong Whiteness Meter WSB-1/2Y/3Y/CY, Digital Whiteness Tester for Paper, Flour, Paint, Plastic, Ceramics, and Textiles
$1,055.80
G460 Fast-Drying Glue for Plastics Bonds PP PVC ABS PC PS Strong Low-Whitening Transparent Instant Adhesive
$38.80
Children's Drawing Board Blackboard Whiteboard Accessories Colorful Whiteboard Markers Chalk Set Magnetic Stickers Toys Letters Numbers Eraser
$3.00
Automatic Retractable Air Hose Reel - Pneumatic Hose Drum for Auto Repair, Detailing, and Water/Electric Applications
$295.00
Sheepskin Rattle Traditional Handmade Baby Safe to Chew Brass Stick Bell Clapper Rattle Intangible Cultural Heritage Leather Newborn
$16.00
Glass Reactor with Multi-Function Stirring and High-Temperature Resistance - Double-Layer Glass Reactor from Manufacturer, Customizable
$85.00
Charcoal Blending Stump Set for Sketching - Highlight, Shadow, and Detail Tools with Replaceable Sponge Tips for Artists
$4.80
Minimalist Stainless Steel Toothbrush Holder with Drainage - Ins Style Bathroom Organizer for Cosmetics
$10.40
Qili Automotive Paint Degreasing Cloth – Glue/Dust Removal Paper, Industrial Wiping & Absorbent Paper
$313.12
Qingzhu Sketch Blending Cotton - Professional Sponge Balls & Paper Stumps for Art Students, Colorful Thick Absorbent Drawing Tools
$4.38
Electric Scooter Dashboard Cover for Aima Metaverse PLAY Instrument Panel Screen Protector Waterproof Case
$13.50
Continental Tire 265/40R22 106V XL FR CSC5 SUV - Compatible with BYD Tang (Removed from Vehicle)
$618.00
Yandi Retainer Storage Case for Kids - Lightweight Portable Box for Orthodontic Aligners and Dentures
$8.42
![[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)
