Sensei - The Master Needle - 500 Pack, 5 needles to 1 guide tube.By Popular Demand: After extensive consultation with Acupuncturists, we have found the system of 5-1 per blister was overwhelmingly preferred. This system reduces the issue of discarding the balance of needles from opened blisters at the end of a treatment providing peace of mind for clients and practitioners. Economical and environmentally friendly!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.The Japanese Master Needle...The metal handle passes perfectly through a traditional Japanese metal guide tube, and this feature,along with those described above, make Sensei an ideal needle for Japanese style acupuncture.Box of 500 sterile, disposable needles.5 needles & 1 guide-tube per blister pack.