Cat. GG-25- Fibronectin: 25mm diameter, #1 thickness, 60 pieces of CE certified crystal clear German glass coverslips with bovine Fibronectin coating over PDL layer on both sides of coverslips for cell culture, sealed 15 pieces per bag x 4 = 60, sterilized, ready to use. Most research labs use #1.5 thickness (cat number GG-25-1.5-fibronectin) instead of this one if the quality of confocal imaging is top priority of consideration.