Description: Material: 6AL/4V(TC4)Titanium Alloy,Grade 5 Size:M4x6 8 10 12 15 20mm Wrench Size: Use 2.5mm Allen key Pitch:0.7 mm Thread diameter:4mm Head diameter:7.2mm Head Height:2.55mm Color:Titanium/Gold/Rainbow/Black Price is for Ony 1 Titanium Bolt.