This is The " ALL METAL" Helix STAINLESS , built out of 304 stainless steal. With a weight of 254 grams this spinner is one of the heaviest spinners on the MARKER for its size. This is a premium product that has a feel and presence of no other. These our modular ( can be taken apart ) so any Helix model you buy can interchange with another! Check out our other colors and special edition models as well.