Allen insert 5 mm 1/2 inch, 55 lg 23 476. Description:
• Size: HX 5 mm.
• Length: 55 mm
• Drive 12.5 mm (1/2 inch).
• Base material: CrV steel 31 CrV3.
• Blade made of chrome-silicon-manganese-molybdenum steel.
• Forged.
• Optimal surface protection: 2 x nickel-plated and 1 x chrome-plated