... *High quality &competitve price *diameter 8,9,10,11,12,14,16,18,20,22mm Cover Glass/Microscope Cover glass/Cover slipThinkness ... 500iner box/cartonWe are maufacturing Microscope slide and cover glass for exportation,we can offer you better price and more professional OEM ... our products, pls do not hesitate to contact with us. Microscope Cover glass (Round shape )