3X(100% New and high quality Seamless glass slide Glass slides are made from borosilicate glass for a durable, gliding surface providing a clear, voice. Color: Transparent Material: Glass Length: 68mm Diameter: 22mm Wall thickness: 2mm Package Contents: 1 x Glass slide Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.)