THESE ARE FOR THE NASCAR R07.2 HEADS, BUT CAN BE USED ON OTHER APPLICATIONS YOU NEED A QUALITY STUD. A R07 ENGINE USES 10 OF THIS LENGTH (5 EACH SIDE) FOR THE ROW OF STUDS THAT ARE THE TOP ROW. YOU GET ALL 23 STUDS FOR 1 LOW PRICE (NO NUTS OR WASHERS ARE INCLUDED, STUDS ONLY).
