Set of 5 high-quality reusable glass slides, including 2 double concave, 2 single concave, and 1 blank slide for versatile microscopy use. Standard dimensions of 25.4 x 76.2 mm (1 x 3 inches) ensure compatibility with most microscopes and easy handling. Made from 1-1.2 mm thick clear glass for durability and excellent optical clarity in scientific observations. Ground edges provide safe handling, reducing the risk of cuts and ensuring user safety during experiments. Lightweight at approximately 30g per box, easy to store and transport for lab, educational, or hobbyist settings.