Because it is high-speed steel, it can be safely used on hard materials such as laminated wood and Decora. It is resistant to heat and shock, and can be used in a variety of situations. This product is recommended not only for professionals but also for general daily carpenters. Even when cutting laminated wood, the blade will not spill easily and will last forever. It is easy to sharpen because it is a composite material (high-speed steel + extremely soft iron), and it can be easily sharpened with an artificial whetstone. Even if you grind the edge of the blade with a grinder, it will not re-temper. Please check the Photo. We cannot change an address after the order has already been placed. We provide valid Tracking Numbers for all orders. If you have any questions or issues, we are at your service. We will reply to your question or invoice within 3 days. We can’t not reply gifts or unreasonable requests such as declared amount.