LONGACRE 3 3/4" DIAMETER RACING SPOT MIRROR KITINCLUDES BRACKET FOR 1 3/4" ROLL BARMOUNTS ON DRIVER'S SIDE OR PASSENGER'S SIDEADJUSTS EASILYBOLTS IN PLACE SOLIDLYTODAY'S RACE CARS ARE HARDER TO SEE OUT OF THAN EVERHEAD & NECK RESTRAINTS LIMIT HEAD MOVEMENT AND THE NEW SEATS MAKE FOR LARGE BLIND SPOTSLONGACRE HAS CREATED A NEW SPOT MIRROR DESIGNED TO GET BACK THE LOST FIELD OF VISIONIT LOCKS INTO PLACE INSURING VIBRATION WILL NOT AFFECT THE ADJUSTMENTCLAMP-ON DESIGN MAKES FOR A SIMPLE INSTALLATION ON THE DRIVER OR PASSENGER SIDE AND THE MIRROR PICKS UP A WIDE AREADRIVERS CAN USE THE MIRRORS TO MAKE SURE THEY ARE REALLY "CLEAR" BEFORE CHOPPING INTO A CORNER MAKING FOR LESS ON TRACK CONTACT AND ANOTEHR IMPROVEMENT IN DRIVER SAFETY