This 5980 geiger mueller tube is from a different manufacturer and is a slightly different style. It is glass and metal construction. This tube is 4" long x 0.36" in diameter. The end cap is the anode (+) and the metal band around the center is the cathode (-). Made in the USA for the Navy. Operates on 700-800VDC. Gas filled with Ne+Halogen. This tube makes a great sensor and would be great for use These may have scratches or smudged labels, however they are all tested for proper operation before being shipped. This GM tube can be used in many different geiger counter circuits for beta and gamma ray detection. C8015