[10 Drin Glass] Laboratory Drin is made of High-quality materials. It can be reused and can be sterilized at high pressure.[Easy to observe] Due to high transparency, you can easily and clearly observe the sample under a microscope.[5mm vaccination ring] the inoculation ring is made of durable High-quality materials.[Application] Very suitable for laboratory analysis, biological, scientific laboratories, children's school projects and other activities.[Including packaging] 60mm x 15mm Petri Dish Glass (10) 5mm for vaccination ring (1). We use PE foam and cardboard packaging to protect the petri dish glass from being damaged during transportation, don't worry!size: 60mmMaterial: Glasscolour: transparentPackage Contents:10 x Petri Dish Glass1 x inoculation loopOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.