Kits include bolts and spacers needed for ISCG and ISCG-05 chain guides. Please check your MRP backplate to see if you need countersunk or button head screws.Countersunk Kit includes: (3)M6x14, (3)M6x16, and (3)M6x20 boltsButton Head Kit includes: (3)M6x12 and (3)M6x16 boltsBoth kits include a variety of 1mm(6), 2.5mm(3), 3mm(3), and 5mm(3) spacers for aligning your chainguide to your chainline.