3 things of the Evolv 510 stand out to me: - Spring Force (this is the main one, much higher spring force than any 510 I have seen) - Copper Center Pin (I believe they might be having these coated now for even better performance) - Ultem 1000 Insulator Material (will stand up to the high heat produced by high wattage vaping) I believe Evolv plans to make their 510's available at some point in the future. Just like case design, Evolv has made the design, specs, materials available and free for anyone to use. /topic/68495-topic/?do=findComment&comment=915975