Falcon® 60mm Cell culture Dish with Easy-Grip Design, TC-treated Polystyrene, Sterile, 20/Pack, 500/Case Actual Dimensions – 52.10mm O.D. x 13.13mm Flat, optically clear polystyrene surfaces for distortion-free microscopic visualization of cells Uniform surface chemistry created by vacuum-gas plasma treatment promotes cell attachment Improved handling of small dishes with the unique Easy-Grip design Nonpyrogenic Sterile Packaged in peel-open, medical-style bags Crystal-grade virgin polystyrene