KWT brand, original from Taiwan. Industrial quality

Drop forged heat treated from SCM steel
Hardened, tempered and black phosphate finish.

Especially suitable for use in areas where chemicals and chrome plate can give off poisonous fumes. 

Size options: 22mm,60mm, 63mm

Q&A
Q:What's SCM steel?
A: SCM and its specifications comply with Japanese Industrial Standards (JIS) that govern all industrial activities in Japan.The SCM435 is a Cr–Mo steel with high strength and high hardness properties, and it has been widely used in the machine parts, shafts, gears and strength screw products.