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.
Total Length:165mm
Blade Length:23mm
Weight:106g
Blade:high-quality carbon steel
Handle:steel plate / non slip coating
Place of Origin:Made in Japan