CAUTION!: ED&D is the only company in the world currently supplying safety products that actually meet or exceed the specified Rockwell hardness’s that are called for in the standards. Manufacturing to these specifications is an extremely difficult process. In addition, we rely on external laboratories that specialize in Rockwell hardness to verify and certify our results. These are corners our competitors’ often cut, but are vital toward providing equipment that meets or exceeds the requirements! If you’ve purchased product safety test equipment that specified a Rockwell hardness requirement, and you didn’t purchase it from us, chances are you’re using a piece of test equipment that DOES NOT meet the requirements.