Three plain glass slides with single concavity and two standard (flat) plain glass slides.
Slides widely compatible for microscope uses.
Technical specs:
size: 25.4 x 76.2 x 1.2mm (1″ x 3″ x 0.05″);
Concave diameter: 16mm(5/8″), depth 0.5mm(0.02″);
Ideal for experiments with liquid samples, to see micro-organisms.