The Trico Exact Fit FZ Beam Blade in the size of 450mm/18 inches, designated as EFB4519R, is engineered specifically for fitted zone wiper arms. It is designed to cater to vehicles with fitted zone wiper arm mechanisms, ensuring a precise fit and efficient performance.

However, there seems to be a discrepancy in the provided information about the blade size, as the description states "Trico Exact Fit Fitted Zone Beam Blade 560mm/22 inches." It's crucial to ensure accuracy in selecting the correct blade size and wiper arm compatibility for optimal performance. The correct size and proper compatibility with the wiper arm mechanism are essential for the effective operation of the blade on your vehicle.