– M15 crank bolts from Monty.
– Made from 7075-T6 aluminium.
– 18mm length, M15 thread, compatible with most ISIS bottom brackets.
– To use with an 8mm Allen key, which can go through the entire bolt.
– Supplied with a pair of 6061-T6 aluminium washers (one for each bolt) that must be used with the bolts.
– RECOMMENDATION – USE STEEL BOLTS TO TIGHTEN THE CRANKS. After tightening – replace with these bolts.