240SX KA24E '89-93. 720 PICK UP KA24E '89-97. ALTIMA KA24DE '91-01. 720 PICK UP Z24S '83-86. WEIGHT TOLERANCE IN EACH SET NOT OVER 2 GRAMS FOR MAXIMUM ROTATING BALANCE. SEMI ROUND PROFILE AT BIG END WILL REDUCE REDUNDANT WEIGHT BUT NOT DECREASE STRENGTH.