<p>This is a package of 72pc pre-cleaned blank microscope glass slides with ground edges plus 100 piece 22x22mm square glass cover slips. The dimensions of the slide are 1" x 3" (25.4x76.2mm) with ground edges. The cover slips are 7/8 x 7/8" (22x22mm) and 0.006" (0.13-0.17mm) in thickness. They are brand new in factory-sealed box.</p> <p><b>Features & Specifications:</b> Quantity: 72 blank slides and 100 coverslips.; Dimensions of Slides: 1" x 3" x 0.04" (25.4x76.2x1mm).; Dimensions of Cover Slips: 7/8 x 7/8 x 0.006" (18x18x0.13mm).; Material: optical glass; </p>