Tall Velocity Stack for a Holley Dominator carburetor. As you can see in the pictures the inside is polished to a high luster and the inside has a brushed finish. This stack is not the cheap Mr Gasket type but is a high quality spun aluminum one that is 7 1/2 inches tall, the carb side opening is 7 1/4 inches and it bells out to a full 10 1/2 inches. There is a stainless screen to hold this down on the carb.