Shimano HP-7400 is a high-performance headset designed for use with road bikes. It features a press-fit ring that reduces the force required to fit the headset into the fork crown. The headset also has an O-ring and dust seal to keep out dirt and water. The HP-7400 is compatible with both JIS and English-standard forks. It is a durable and reliable headset that will provide years of trouble-free use.