- Pre-tension Bolt for Shimano Hollowtech II Cranks - Simplify things with an 8mm fitting and add a splash of your favorite anodized color. Never worry about turning the garage upside down at midnight to find that little ‘thingy’ to pre-tension your cranks ever again - Remember this product needs minimal torque and do not exceed the manufacturers maximum recommended torque 0.7 to 1.5Nm - Fits: - XTR, XT, SLX, LX, Deore, Saint & Zee cranks and bikes with a Shimano e-bike motor