1. Medical grade raw materials , non-toxic, non-pyrogenic, single use only. 2. transparent barrel and colorfulplunger , other custom colors are available . 3. Custom printing is available with indelible ink. 4. The plunger fits the inside of barrel very well to allow for free and smooth movement. 5. Material for barrel and plunger: Medical grade PP(polypropylene). Gamma / steam sterilization compatiable 6. Material for gasket: bromo butyl rubber gasket 7. With caps . 8. Available size: 6ml 11ml