The visuality of ON and OFF position of the knob will be everlasting during use.
Please be informed that we have decided to perform the following modification.
- Change of ON-OFF from printing to laser marking
- Change of body material from Steel to Stainless steel.
* We don't change part numbers by this modification.
* Other parts (Shank, Pin, Knob, Spring) are kept unchanged.
The new production starts from this month, May 2017. The inventory will be replaced to the new
version after selling out the previous version respectively.