Easy installation with 12 point socket. I wish I could remember the size but it was in my kit. Time will tell if they work well. ALWAYS replace the flywheel bolts when removing or replacing the flywheel. Lots of grease for the screws. Read the instructions - don't put lube on the threads, just under the head. I used extra ARP pressure plate bolt lube that didn't come with lube. Also note that their instructions call for a slightly different torque value than your manual. Since lube takes away some of the friction so you get more accurate torque, you need to use the recommended torque that compensates for this.
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