In order to select the right size tap, measure the area where it will be placed, then choose a tap with the corresponding spout height and reach, made of the material you prefer. Water pressure is important to check before buying a kitchen tap as many taps require a minimum pressure of 0.1 bar. High-speed steel (HSS) has remained a popular tap material for decades because it can maintain its integrity while threading, despite high temperatures and vibration. Various types of high-speed steel exist, but the main "ingredients" include high carbon tool steel, tungsten, chromium, vanadium, and iron.