12.9 black steel.

• Width: 8 mm
• Lenghts: 45 mm / 50 mm / 55 mm / 60 mm / 65 mm/  75 mm / 80 mm / 85 mm / 90 mm / 95 mm / 100 mm / 110 mm / 115 mm / 120 mm / 125 mm / 130 mm
• Hardness: 12.9 steel
• Allen: 6 mm