Description: Reduces the chances of finger cuts and cross contamination Small opener inside scores the ampule stem to help insure a clean break. Mini pocket size,vary easy to take and use. Insert the ampoule lid into the snapit (align the dots, if the ampoule has a dot) snap open the ampoule (snap away from the dot) ,eject the ampoule lid Suitable for nurse doctor and home use Specification: Material: PE Size Chart: Each Opener Size : Approx.5.3 x 2cm /2.1 x 0.8 inch Package Includes: 100 Pieces Ambule Openers Images & Text: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!