MCS Chainring Bolts Steel

MCS Chainring Bolts Steel Chrome
MCS Chainring Bolts Steel These are standard 4mm BMX sprocket bolts. There are five per bag. Attach your chainring to your cranks or spider with a little style and weight reduction. Uses 5mm Allen Wrench. 4 bolt 104bcd cranks sometimes use longer 7mm bolts. Chrome. 5 per pack. This is the standard most common size.