Thank you for this question.
I use stainless steel needles most of the time.
Sometimes I use gold needles to increase ones energy.
Sometimes silver needles to increase the effect of calming.
However,to obtain the acupuncture effect,it is not necessary to use only needles,I use magnets,electric current and special massage on chosen acupuncture points.
Some patients just dont like needles.
To make those people at ease, I first insert an needle in my arm, or leg and talk to them.
It is of the utmost importance to make patient comfortable.