Whether you didn't tighten your caliper bolts before the last time you rode or are simply looking to exercise every gram from your state-of-the-art, uberlight cross-country bike, we have what you need. This Formula Ti Caliper Mounting Bolt Kit contains four 6 x 18mm titanium hex bolts to secure your disc brake calipers to the frame or caliper adapters. These four bolts will save you 12 grams over the use of the standard steel fasteners.