LXLO 3mL Pen Cartridge Spacers, 50-Pack Reusable PLA Extended-Stroke Inserts

LXLO cartridge spacers are reusable PLA inserts for regular 3mL cylindrical pen cartridges, designed to extend the plunger stroke and help reduce liquid left inside.

• 50 spacers per pack — supports use across multiple cartridges and routine replacements.
• Made for regular 3mL cylindrical cartridges — fits most standard cartridges of this type.
• Auxiliary pushing structure — helps reduce internal liquid residue.
• Extended push stroke — helps the plunger reach its limit position.
• Reusable PLA construction — lightweight spacers can be stored and used again.

For a 3mL pen cartridge, the spacer provides an additional pushing structure within the cartridge setup. It is intended for people using compatible standard cartridges who want the plunger to travel farther through its operating stroke. The pack quantity also suits organizing supplies for multiple cartridges, keeping spares for regular replacement, or arranging a vial station. Its purpose is specific: a cartridge accessory for compatible 3mL pen setups, rather than a cartridge or a pen itself.

How does the LXLO spacer help a 3mL cartridge?

The spacer extends the push stroke so the plunger can reach its limit position. Its auxiliary pushing structure is designed to reduce liquid residue inside the cartridge and help make fuller use of its contents. The resulting benefit depends on using a cartridge that matches the spacer’s intended format; the spacer does not change the cartridge’s stated capacity.

• Designed for the cartridge’s internal pushing action.
• Supports a longer operating stroke during use.

Which cartridges are compatible with LXLO spacers?

These spacers are made for regular 3mL cylindrical cartridges and are compatible with most standard cartridges in that format. They are intended for 3mL pen cartridges, including peptide pen use where the cartridge is a compatible standard type. Compatibility is based on the cartridge format, so the key comparison is whether yours is a regular 3mL cylinder.

• Suitable for standard 3mL cartridge setups.
• Simple to install in a compatible cartridge.

What comes in the LXLO spacer pack?

The pack contains 50 spacers made from PLA, a lightweight material selected for reusable use. The spacers are described as high-strength, with toughness and resistance to deformation; they can be kept for repeated use and are easy to store. The quantity is intended to cover several cartridges, storage needs, vial station organization, and daily replacement requirements.

• Pack quantity: 50 spacers.
• Material: reusable PLA.

LXLO spacers are suited to people who use regular 3mL cylindrical pen cartridges and want an accessory for the cartridge’s pushing stroke, with a multi-piece supply for ongoing setup and organization. They are designed around compatible standard cartridges, so cartridge format is the deciding fit detail. For that buyer, the pack combines a reusable insert with an extended-stroke design for 3mL cartridge use.