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The MCS Single-ring Aluminum Short Chainring Bolts comes in a set of 5 male/female bolts. The inside measures 4mm when tightened and have a 7mm total height.
Material: 6061-T6 Aluminum
Size: Single-ring Short / 4mm inside measure when tight / 7mm total height / M8x6mm Bolt / M8x4mm Nut
Weight: 7.1 grams / 0.25 ounces per set of 5