These bolts are designed as a direct fit for 30 Tooth x 104 BCD threaded chainring. These are alloy bolts with 4mm hex heads and 10mm length. Features: Designed for M8 x .75 thread pitch 10mm long 4mm hex head Bolt length is laser engraved onto the bolt head for easy length identification 6-7 Nm installation torque with light grease on threads only Specifications: Drive Type: 1x Speed Compatibility: - Material: Aluminum Quantity: 4 Bolts Length: 10mm Color: Black Weight: -