Description: Material: 6AL/4V(TC4)Titanium Alloy,Grade 5 Size: M8x15mm Color: Titanium/Gold/Rainbow/Black Bolt Thread Pitch: 1.0mm Cap Thread Pitch: 2.5 mm Package Content:(depends on your chioce) Only 1 piece M8x15mm Titanium Crank Bolt or 1 Set or 2 Sets