The Name Says it All! PIAAs Intense White bulbs produce a more radiant white beam without any hint of blue. This bulb has been completely re-engineered from the ground up. What youll see in the 9005 and 9006 bulbs is a larger glass tube with a white top coat. The larger glass tube increases output (28% whiter color than STAR WHITE) and allows the bulb to burn at much cooler temperatures. PIAAs new Intense White Bulbs provide the best possible balance between performance and bulb life.