Shun Chainring Bolts & Nuts, Set of 5, Size: 0.5 x 0.4 inches (12 x 9 mm)Shun Chainring Bolts & Nuts, Set of 5, Size: 0.5 x 0.4 inches (12 x 9 mm)Features of Shun Chainring Bolts & Nuts, Set of 5, Size: 0.5 x 0.4 inches (12 x 9 mm) Steel Bolt Length: 12mm (Total length including bolt head: maximum approx. 0.6 inch (14 mm)); nut length: 0.4 inch (9 ..