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4ml Double-chamber Glass Cartridge
1. Cartridge, also known as pen syringe glass sleeve.
2. The size of 4ml cartridge is outer diameter 10.85mm, length 79.5mm, and outer diameter of the mouth 7.15mm. Other sizes can be also customized.
3. The colour of 4ml cartridge is clear, material is 5.0 neutral borosilicate glass, and its water resistance is type1.
4. We can provide aluminum cap, gasket, piston and other supporting products.