1993-1997 Geo Prizm & 1991-1997 Toyota Corolla 5 .25" 5.25" Front Door Speaker Adapter Spacer Rings - SAK090_475-1 Pair 1/4" thick adapters assure no clearance problems Utilizes existing vehicle mounting points, and requires no cutting or drilling Manufactured with 4 3/4" round cutouts to house most 5 1/4'' aftermarket speakers