Part # 22054 Model : ORIGIN8 Single-Ring Steel Chainring Bolts Supplier Part # CHAINRING BOLT SET OR8 SINGLE STL BLK Set of 5 male/female bolts Inside measures 4mm when tightened, 7mm total height Anodized finish MX/Single M8x6mm Bolt / M8x4mm Nut Steel BlackUPC/EAN/GTIN: 072774220540