SIZE: Microscope Slide(L * W): 25.4 mm/1''x76.2 mm/3'',Thickness: 1 mm/x1.2 mm;Cover Glass(L * W): 20 mmx20 mm,Thickness:0.13 mmx0.17 mm;Plastic Dropper Capacity: 1ml x 2 pcs,2ml x 2 pcs PACKAGE INCLUDED: 50 Pcs ground edge pre-cleaned microscope slides and 100 Pcs pre-cleaned ...SIZE: Microscope Slide(L * W): 25.4 mm/1''x76.2 mm/3'',Thickness: 1 mm/x1.2 mm;Cover Glass(L * W): 20 mmx20 mm,Thickness:0.13 mmx0.17 mm;Plastic Dropper Capacity: 1ml x 2 pcs,2ml x 2 pcs PACKAGE INCLUDED: 50 Pcs ground edge pre-cleaned microscope slides and 100 Pcs pre-cleaned microscope cover glasses with 4 plastic droppers HIGH QUALITY MATERIAL:Slides and coverslips are composed of high-quality optical glass for clear sample identification. One end of the slide is frosted glass to prevent fingerprints. SAFE FOR USE:Microscope slides and coverslips have no sharp edges, they are neat and do not hurt your hands, and children also can use them safely WIDELY USE:Suitable for all optical microscopes to make biological microscope specimens, including plants, insects and animal tissues, for biology education