the size of the microtome knife is 160cm(L) x 50cm (W) . The material is stainless steel . microtome knife/pathology blade1)material: stainless steel2)size: 160mm3)feature: main used for microtomes ,especially suit for hard tissues, such as Bone ,plastic ,plant, hair.4)can cutting the tissue many times ,recycling .5)suit for YD-1508 ,YD-2508 ,YD-202 microtomes. microtome knife/pathology blade