`- Aluminum bolts for 30 tooth x 104BCD chainring with M8 x 0.75 threaded bolt holes\n- 10mm long, compatible with a bash ring (bolt length is laser engraved on the head)\n- 5mm hex, torque to 6-7 Nm maximum with light grease on the threads \n- Made in the USA from 7075-T6 aluminum alloy \n- 7g/4-bolt set