It's a 16G turbo. Same set up as the Sbr 20G if you have heard of that. It is a 16G turbo mated with a 20G wheel. Better spool up time and less lag. It has a bigger 34mm flapper that eliminates that, so internally gated. This turbo is a complete rebuilt to specs by Garrett by Forced Performance last year. There's little play. Supposedly less than 1k on the setup, I bought it from a local who had it on his 2g. I'm looking to get 375 OBO or trade plus cash for a bigger turbo set up externally, such as a 20g or 50-trim.. let me know!