THIS IS THE STRONGEST INTAKE BOLT KIT AROUND . THESE ARE A 12 PT 170,000 TENSILE STRENGTH , WHICH IS STRONGER THEN GRADE 8 . THAT HAVE A REDUCED HEAD SIZE TO GET IN THOSE HARD TO GET TO POSITION . THIS BOLT IS FOR AN EDELBROCK TORKER INTAKE AND COMES WITH 12 BOLTS AND 12 WASHERS ,8 SHORT AND 4 LONG .