Material: 6AL/4V(TC4)Titanium Alloy,Grade 5 Size: M5x16 18 20mm Color: Titanium/Gold/Rainbow/Blue/Bronze/Black Thread Diameter: 5mm Pitch: 0.8mm Head Diameter：8.5mm Head Height: 5mm Wrench Size: Use 4mm Allen Key Applications: for Bicycle Parts Price is Only for 1 Bolt.
