Knuckle Duster Self-defense Broken Window with Rope

Size: 56mm * 46 (widest)/30mm * 12mm
Material: Steel
Process: silver-plated titanium on the surface
Weight: about 103g

It is made of steel, very strong, small and portable, and protects itself in an emergency. There is a lanyard, which can be hung on the waist or backpack as an ornament.