For use with Superstrut metal framing and hanger systems. Goldgalv electroplated zinc finish on case hardened steel. Extreme resistance to pull out and side slip. Unique design of alternate teeth provides a wedging action that increases the load. 1/2" ---- 1. Since it is imported overseas, even if it is brand new, there may be some damage to the package, but please rest assured that this does not affect the product. 2. Product **and other products made in Japan are not applicable. 3. Packaging and instructions are in English.