3mL Cartridge Spacers (10-pack)

These 3mL cartridge spacers are designed to fit behind standard 3mL cartridges, helping advance the cartridge forward so the pen can reach the full plunger stroke. The result is more complete use with less waste.

Simple and reusable, these spacers are a small but practical addition to any injector pen setup.

• Designed for standard 3mL cartridges
• Helps achieve full plunger travel
• Supports more complete cartridge use
• Reusable and easy to use
• Durable, lightweight 3D-printed construction

Please Note: Each item is 3D-printed to order. Minor variations in texture, finish, or color are normal and part of the manufacturing process.