S-2C/T-55C Line
S-2C / T-55C line has coil spring. The characteristic makes hard for spring to unfasten.
Also 3 holes on the grip make difficult for non slip-coating to peel from the grips.
Model E-6C is popular because the jagged blade does not slip on cutting.

S-2C
(Curved blade)
Total Length: 165mm
Blade Length: 23mm
Weight: 106g
Blade: high-quality carbon steel
Grip: steel plate / non slip coating

T-55C
Total Length: 190mm
Blade Length: 48mm
Weight: 115g
Blade: high-quality carbon steel
Grip: steel plate / non slip coating

E-2C
(Straight blade)
Total Length: 165mm
Blade Length: 26mm
Weight: 100g
Blade: high-quality carbon steel
Grip: steel plate / non slip coating

T-5C
Total Length: 175mm
Blade Length: 35mm
Weight: 110g
Blade: high-quality carbon steel
Grip: steel plate / non slip coating

E-6C
(Jagged blade with wire-cutting function)
Total Length: 190mm
Blade Length: 42mm
Weight: 135g
Blade: high-quality carbon steel
Grip: steel plate / non slip coating

T-7C
Total Length: 210mm
Blade Length: 63mm
Weight: 140g
Blade: high-quality carbon steel
Grip: steel plate / non slip coating