AmScope BS-50P-100S-22X4 Rectangular Blank Slides + Cover Slips 50/100 Count

This is a 4 pack of 50pc pre-cleaned blank microscope glass slides with ground edges plus 100 piece 7/8"x7/8" square glass cover slips in each pack. 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.Features & Specifications:Quantity: 200 blank slides and 400 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