Ok this is stupid. I keep seeing reference to the hex bolts common to Sugino 75 BB/crank setups being 15mm. Do they seriously use a huge 15mm hex wrench for those bolts or am I reading this wrong? Anyone who has them on their bikes want to chime in and let me know? I only ask because I haven't even seen a 15mm hex wrench around here and photos of the BB/crank setups I've seen don't look like the head is that big.
The biggest I've seen are 10mm hex bolts holding the crank arms on my Shimano XT setup..