Suitable for: Polypropylene barrel plungers for measuring and dispensing fluids, suitable for laboratory use and experimentation Aseptic Packaging: Each syringe is individually sealed, clean, safe and sterile for essential oil, scientific laboratory, industrial, ink, perfume, lubricant, sealant and other applications. Versatile: These sterile syringes are suitable for replenishing, measuring, garden watering and essential oil separators, and more. Package includes: 4 packs of measuring syringes are included in this package, enough to use or replace Reminder: The syringe is for industrial use only Wide range of applicable uses: For measuring and dispensing fluids in laboratories and experiments. Replenishment, metering, garden watering and essential oil separators for everyday use. For essential oils, inks, perfumes, lubricants, sealants in industrial applications. Specification: material: plastic Rubber stopper: latex aspect: Capacity-----mouth length-----mouth inner diameter-----pipe diameter-------full length 20ml---------1.38"/3.5cm-------0.15"/0.38cm------------0.78"/2cm---- - 5.82"/14.7cm 30ml---------0.35in/0.9cm--------0.1in/0.27cm------------0.9in/2.3cm---- - 5.35"/13.6 cm 60ml---------1.38"/3.5cm-------0.15"/0.38cm------------1.18"/3cm---- - 6.7"/17cm 100ml-------1.38"/3.5cm--------0.15"/0.38cm------------1.5"/3.8cm----8 inches / 20.5 cm 150ml-------1.38"/3.5cm-------0.15"/0.38cm------------1.65"/4.2cm---8.27"/ 21 cm 200ml---------1.38"/3.5cm-------0.15"/0.38cm------------1.85"/4.7cm---8.54"/ 21.7 cm The package includes: 4 syringes notes: These syringes are for industrial use only.