Designed to pressure fit on 7.3 Ford Godzillas with Innov-8 ITB intakes, these stack screens or trumpet screens are pressure fit with O-rings. The kit includes 8 mesh rounds, 8 O-rings, and 8 screen retainer rings offered in billet black anodized aluminum or a strong thermally resistant Nylon Polymer. Please expect a 5 day lead time for fulfillment of this product.