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.
Size: Single-ring Short Bolts or Double-ring Long Bolts
Color: Black with laser-etched BOX logos
Weight: 21 grams / 0.74 ounces for a Short front set of four with backs
23 grams / 0.81 ounces for a Long front set of four with backs