Profile Elite Flush Mount Crank Bolts head-tube-size-1-1-8-to-1-step-down Nema Race Pants are the

Nema Race Pants are the greatest athletic wear for cyclists because that's how they are designed

while maintaining plenty of strength and the oversize 31

175mm (w/BB):  34

very flexible and comfortable to wear

You will usually use the short chromoly or standard alloy chainring bolts (unless you use Profile or some other thicker chainring)

Profile Elite Flush Mount Crank Bolts head-tube-size-1-1-8-to-1-step-down Nema Race Pants are thePRODUCT DETAILS Profile Elite Flush Mount Crank Bolts are for use with Profile 22mm Elite Titanium crank axles. 7075 aluminum M15 x 1. 25 threads Available in black only with a laser etched finish. Includes (2) bolts and (2) aluminum flush washers. Elite bolts should not be used to pull on your crank arms. For crank arm installation, please use the proper GDH crank tool. Bolts use an 8mm Allen Wrench. Weight(per set of two): 23g . 805 oz Additional