Features1Full CNC anode cutting, suitable for all kinds of weather, never rust. 2 fit for MTB Disc caliper brake adapter. 3Light weight, high strength titanium bolts with many applications.SpecificationThese bolts + spacers set are great accessories for MTB Disc brake, crank and handlebar stem.Features:Full CNC anode cutting, suitable for all kinds of weather, never rust. fit for MTB Disc caliper brake adapter.Light weight, high strength titanium bolts with many applications.Specification:Material: TC4 Titanium alloyColor: Titanium / Gold / Rainbow (Optional)Size: M618mm / M620mm (Optional)Head Diameter: 10mm / 0.4inHead: #5 Torx HeadPackage Size: 5 * 5 * 2cm / 2 * 2 * 0.8inPackage Weight: 30g / 1ozPackage List:4 * Bolt4 * SpacerPackage List4 * Bolt4 * Spacer