With a consistent size and tip angle, these knives replace glass and razor blades in a variety of sectioning and block facing applications. The sharp edge lasts through thousands of sections, eliminating mid-procedure knife changes and frequent re-ordering, while enhancing productivity. They fit tightly in the glass knife holders of most microtomes, are easy to handle and reduce the risks of cuts to your hands. Due to their nature, blade resharpening is uneconomical; replacement blades are readily available.