M8
Flange head diameter: 13.6mm/0.53"
Head height: 6.5mm/0.25"
Pitch:1.25mm
Internal: Using T40 Torx Wrench
External: Use 10mm 12 points socket
Colors: Titanium/Gold/Rainbow/Burnt blue/Black
Available length: M8x15 20 25 30 35 40 45 50 55 60 65 80mm
Price is for one piece titanium bolt.