Sensei Needles - Box of 5005 Needles per Guide Tube. Introducing the NEW & IMPROVED Sensei Ultra Smooth Japanese style acupuncture needle. Sensei are as sharp and smooth as current technology allows. The steel used is strong and flexible, not soft as in many other acupuncture needles. The rigid metal handle is ideal for moxibustion and electro acupuncture. The textured finish on the handle enables sure and sensitive manipulation. Features: NO MORE TABS Needles easily detaches