Cranks / Box One Chromoly Chainring Bolts

Box Components

Box One™ Chainring Bolt kits include five 8.5-mm front bolts, five 6-mm front bolts and five 5-mm rear nuts so they will fit just about any chainring/crank combination, including chainrings and cranks with threaded holes.
(5) 8.5mm bolts
(5) 6mm bolts
(5) 5mm nuts



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