1. Medical grade Polycarbonate , non-toxic, non-pyrogenic, single use only. 2. Luer Lock adapter . 3. transparent barrel and colorfulplunger , other custom colors are available . 4. Custom printing is available with indelible ink. 5. The plunger fits the inside of barrel very well to allow for free and smooth movement. 6. With caps . 7. Available size: 1mL 8. Standard: ISO7886-1 , BP , USP