We strive for penetration. Ultra-sharp hook tip and "Nano Smooth Coat" provide unparalleled penetration performance. The Ultimate Penetration Challenge. The A1 Ichi Katsus ultra-sharp "Spat Taper", a low-friction surface treatment "Nano Smooth Coat" and a slightly inward hook tip angle ensures that the mouth is captured with a light abuse and instantly penetrates the mouth of the grayer, making it the highest level of penetration in history. This ensures a secure hook even in situations where the force of abuse is difficult to transmit due to strong winds, smooth lines, and complex tides, and long throws. The material is made of a high hardness and high strength material "A1", which is difficult to dull even if it is a sharp hook, and it is combined with a sturdy wire diameter for excellent strength and durability.