The Cane Creek 40 Series Zinc Coated Steel Cartridge Bearing Headset is designed for performance and longevity. With a 41mm diameter and a 45-degree angle, this headset ensures a precise fit for various bike frames, including EC34, IS41, ZS44, and ZS49. The zinc-coated steel construction provides exceptional durability, while the smooth cartridge bearing design enhances steering performance. Ideal for cyclists seeking reliability and ease of maintenance, this headset is a perfect choice for any bike enthusiast.