The Wolf Tooth Components Dual Hex Fitting Chainring bolts are 6mm long and have been designed for single-chainring (1x) usage. They use a double hex head interface so you don't have to use a chainring nut spanner. Not to mention they look very exceptional. Features: 6mm length Made in the US out of 7075 Aluminum Alloy Has hex heads on both the bolt and nut for easy installation Max torque of 7-8 Nm with light grease on threads only Specifications: Drive Type: 1x Speed Compatibility: - Material: Aluminum Quantity: 4 Bolts, 4 Nuts (8 Total) or 5 Bolts, 5 Nuts (10 Total) Length: 6mm Color: Blue Weight: 8g (4 Bolts + 4 Nuts), 12g (5 Bolts + 5 Nuts)