righteous_one pretty answered it. There's also other types such as Hood
locking pins with key, and the Hood
pins with cables. If you feel you aren't able to put a hole through your Hood
yourself get a pro to do it. No going back once you mess up with Carbon Fiber.
If you're Hood
has a good Hood
latch design then you may not need the pins but it is a wise investment if you're worried about the Hood
smacking the windshield at high speeds. My latch is molded between the Carbon Fiber & is adjustable. I've tried all three different pins after going through 3 hoods and 1 Hood
without which I have now. The one with the pins is safer and more stable to wind gust. I would reccomend puting them on if you don't trust your Hood
latch. A lot of Hood
latches on Carbon Fiber hoods aren't strong and many don't close properly. Hood
pins fix all this. I like them with and without. Carbon Fiber hoods are for "off roaduse" only. If you buy one they will demand Hood
pins put on them. It's up to you if you want to follow that rule or take a chance.