Alloy blade: precision grinding process, high-quality alloy blade, hardness as high as 93-94.5, constant sharpness, long service life. Top bearing design: The top bearing design ensures the stability of the blade during work. With the high-quality alloy blade, the cutting is smoother and the work efficiency is effectively accelerated. High-frequency welding, not easy to break the knife: high-frequency welding of the handle and head, seamless, full and firm. Suitable for cutting solid wood board, particle board, plywood, MDF and other materials.Please according to your choice, thank you!