A.
anwered by: canteau
These chainring bolts are for the inner chainring (64bcd chainring on a mountain triple) If you are going to be using a Race Face narrow-wide 30t threaded chainring you will want to use the Wolf Tooth chainring bolts which are a shorter 10mm length.
http://www.treefortbikes.com/product/333222391402/1324/Wolf-Tooth-Set-of-Chainring.html