Bar knife Tsumura Steel Co., Ltd. Tsumura Hyper spider for self-propelled lawn mower

●By quenching the entire blade and impact quenching only the cutting edge, it has a very high hardness and excellent durability.
●Overwhelmingly wide 2-stage blade and impact quenching have increased the life by approximately 80% compared to conventional products.
●By cutting the outer circumference in a C-shape, even if the cutting edge wears down, it will not become round and chevron-shaped, so cutting resistance is low and sharpness is maintained.
●By making the cutting edge wider, centrifugal force is applied during rotation, which provides excellent sharpness even at low speeds, prevents grass from tangling, and improves fuel efficiency.
●Made in Japan.