The EDC Knuckle Challenge: Pushing Limits and Testing Gear Home › Forums › Anti-Aging › The EDC Knuckle Challenge: Pushing Limits and Testing Gear This topic has 0 replies, 1 voice, and was last updated 2 years, 7 months ago by andrewmorris1. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In