Heathrow Scientific HD15994G Black Cork Lined 100 Place Microscope Slide Box, 8.25" Length x 7" Width x 1.3" Height 100-place storage box for holding microscope slides securely Holds 25 x 75mm (1 x 3") microscope slides (sold separately) Numbered slide positions and content sheet for listing slides Top-hinged lid and nickel-plated clasp for slide security Blue, green, red, yellow, white, gray, and black assorted colors