Injection Pen Case
1, 2, 4 & 8 Pen Travel Case with Cartridge & Needle Storage
Vial Size Chart
Vial sizes refer to liquid capacity. Below are the approximate dimensions of each common vial — match your vial to the size this case is built for.
| Vial Size | Approx. Size (Ø × H) | Common Contents |
|---|---|---|
| 1 mL | 11 × 32 mm | Small vials |
| 2 mL | 14 × 35 mm | Standard vials |
| 3 mL | 16 × 35 mm | Standard vials |
| 5 mL | 20 × 38 mm | Larger vials |
| 10 mL | 22 × 50 mm | Bottles & diluents |
| 20 mL | 30 × 57 mm | Multi-dose bottles |
| 30 mL | 36 × 63 mm | Large bottles, bulk |
| 50 mL | 40 × 75 mm | Bulk storage |
| 100 mL | 52 × 95 mm | Bulk storage |
Dimensions are approximate and vary slightly by manufacturer. Ø = diameter, H = height (excluding cap). When in doubt, measure your vial’s widest point and height.
- Hard-shell impact protection
- Fridge & freezer safe
- Keeps vials organized & secure
- TSA friendly & travel ready
- Ships in 24–48 hours
You picked a Blemished item
This version has a minor cosmetic or print defect — a small mark, blemish, or imperfection from the 3D-printing process. It’s offered at a lower price because we can’t sell it as new.
- 100% functional — protects your vials exactly the same.
- Cosmetic flaw only — appearance varies slightly unit to unit.
- Discounted & final sale.

The VialCase Injection Pen Case keeps your pens, spare cartridges and pen needles organized in one rugged, latching hard case - every pen in its own channel so nothing rolls around, with a finger groove across the middle to lift any pen straight out.
Key Features
- Individual channel for every pen - no rattling, no pens rolling over each other
- Finger groove across the middle of every channel: pinch and lift any pen or cartridge
- Spare-cartridge channels (1, 2 and 4 pen cases): two 3 mL cartridges per channel
- Full row of 10 round wells (1, 2 and 4 pen cases): pen needles standing in their outer caps, or 3 mL vials
- Snap hinge and twin snap-on latches - no screws
- Safe for cold storage in the refrigerator
- Available in Black, RGB Metallic, Cyber Green, Galaxy Purple, Purple and Cobalt Blue
What Fits
- Pens: up to 172 mm (6.8″) long and 20 mm (0.79″) wide at the widest point with the cap and clip on - most reusable and pre-filled injection pens
- Cartridges: standard 3 mL glass pen cartridges (11.6 mm × 64 mm)
- Wells: 17.5 mm (0.69″) round - pen needles in their outer caps, or 3 mL vials
Capacity
- 1 Pen: 1 pen + 2 spare cartridges + 10 needle / 3 mL vial wells
- 2 Pens: 2 pens + 4 spare cartridges + 10 needle / 3 mL vial wells
- 4 Pens: 4 pens + 4 spare cartridges + 10 needle / 3 mL vial wells
- 8 Pens: 8 pens
Dimensions
- 1 Pen: 8.09″ L × 3.86″ W × 1.73″ H (205 × 98 × 44 mm)
- 2 Pens: 8.09″ L × 5.43″ W × 1.73″ H (205 × 138 × 44 mm)
- 4 Pens: 8.09″ L × 7.32″ W × 1.73″ H (205 × 186 × 44 mm)
- 8 Pens: 8.10″ L × 9.07″ W × 1.73″ H (206 × 230 × 44 mm)
Care
- Hand wash only with cold water
- Not dishwasher safe
Good to know
- Measure your pen with the cap on (length, and width across the clip) before ordering - pen sizes vary by maker
- Pens, cartridges, needles and vials are not included
- RGB Metallic finishes shift in colour (red, blue, purple, pink) and exact colour blends are selected at random
- Each case is 3D printed to order
Shipping
- Free shipping on all orders over $99.99.
- Made to order — ships in 24–48 hours.
- Tracking provided on every order.
Returns
- 30-day money-back guarantee — love it or return it.
- No-questions-asked returns on unused items.
- Contact us and we'll make it right.
Customer Reviews
Real, verified reviews and photos from VialCase customers.
Why VialCase vs. a Generic Box
Built for vials — not a repurposed tackle box.
| Feature | VialCase | Generic Storage Box |
|---|---|---|
| Custom-fit vial slots | ✓ | ✗ |
| Hard-shell impact protection | ✓ | ✗ |
| Fridge & freezer safe | ✓ | ✗ |
| Dedicated diluent-bottle slot | ✓ | ✗ |
| Made in the USA | ✓ | ✗ |
| 30-day money-back guarantee | ✓ | ✗ |
| 1,600+ verified reviews | ✓ | ✗ |
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