This is a package of 72pc pre-cleaned blank microscope glass slides with ground edges plus 100pc square glass cover slips. The dimensions of the slide are 1" x 3" (25.4x76.2mm) with ground edges. The cover slips are 23/32 x 23/32" (18x18mm) and 0.006" (0.15mm) in thickness. 

Features & Specifications:

• Quantity: 72 blank slides and 100 coverslips.
• Dimensions of Slides: 1" x 3" x 0.04" (25.4x76.2x1mm).
• Dimensions of Cover Slips: 23/32 x 23/32x0.006" (18x18x0.13mm).
• Material: optical glass