KITS COMPRISES OF TWO ADJUSTING SCREWS PER KIT, TWO PLASTIC NUTSERTS AND. ALSO TWO PULL BACK TENSION SPRINGS FOR INNER BOWL PER KIT. DESIGNED AND USED ON A VARST RANGE OF CLASSIC VEHICLES, MINI WITH SEALED BEAM UNITS, ASTON MARTIN, BENTLEY, LOTUS, JAGUAR, HILLMAN, HEALY.