These are snap on plastic caps that come with a very small tube of silicone glue for the rocker arm bolts. In my opinion it is overpriced for what you get. They look fine once installed, especially on a blacked out engine, but after a ride you'll find that some of them have fallen off. I recommend buying a tube of black silicone glue, using it on each cap and allowing plenty of time to cure before riding the bike. My 2 star rating is actually closer to 1-1/2 stars.
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