Hxr components chainring boltsthe hxr components chainring bolts feature a quality anodised and lazer etched finish and they contain all the spacers that you could ever need to dial in the perfect chainline features anodised and laser etched 4x chainring bolts 4x 12mm spacer 12x 05mm spacers for adjusting and improving your chain line weight 5g eachbuyhxr componentsfrom chain reaction cycles the worlds largest online bike store