Model A:
Length, width and height:64*60*18(±0.5)mm
Weight:116(±5)g
Finger hole diameter:24.5(±0.3)mm

Model B:
Length, width and height:64*60*18(±0.5)mm
Weight:116(±5)g
Finger hole diameter:24.5(±0.3)mm

Model C:
Length, width and height:64*60*18(±0.5)mm
Weight:175(±5)g
Finger hole diameter:24.5(±0.3)mm

Model D:
Length, width and height:64*60*18(±0.5)mm
Weight:170(±5)g
Finger hole diameter:24.5(±0.3)mm
It is made of titanium alloy, with high hardness, light weight and easy to carry. It can be used as an ornament in a backpack or waist, and can protect itself in an emergency.