1.microtome blades,Stainless Steel 2.50pcs/box,250boxes/carton 3.withISO9001,CE,FDAcertificate 4.T/T microtome bladesProduced use high quality stainless steel,its stronger than the others and easy to cutting the paraffin. CodeDescriptionMaterialCLE009Microtome Blades Feather BrandStainless Steel Disposable Microtome blades