Cat. GG-14-Laminin: 14mm diameter, #1 thickness, 60 pieces of CE certified crystal clear German glass coverslips with mouse Laminin coating over PDL layer on both sides of coverslips for cell culture, sealed 15 pieces per bag x 4 = 60, sterilized, ready to use. If you are going to do cell culture in 24 well plates, you might need 12mm coverslips instead of this one, such as GG-12-laminin, because the gap between edge of coverslips and well wall is too narrow to remove the coverslips after your cell culture.