Guides
Plain-English guides to the supplies we stock: sizes, materials and what the specifications mean. Every guide links straight to the products.
- Pen Needle & Syringe Size Chart: gauge, length and pack sizes
- Sterile Empty Glass Vials & 3ml Pen Cartridges: A Buyer’s Guide
Sold as a supply item to buyers aged 18 and over. We don’t provide medical advice or usage instructions. Buyer is responsible for lawful use.