It is transfer from Silent type

Balance of sound and Power think that it is good if setting is put out.
Personally I wish it was a bit bassy more - - -

Middle to high speed rotation improved without sacrificing low speed range.

If possible, I'd like the diameter to be 3 to 5 mm more extended Type - - - (Lol View detail

It changed from the silent inner silencer. It seems that it is bad just for a moment although sound changed to a good sound of low-pitched sound. [ of an omission ] When processing the punching metal which has closed the pipe, sound and an omissio

It changed from the silent inner silencer.
It seems that it is bad just for a moment although sound changed to a good sound of low-pitched sound. [ of an omission ]
When processing the punching metal which has closed the pipe, sound and an omission also became good. View detail