Documentation: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.diagnostics/get-counter?view=powershell-5.1
Show all available counters, be careful, this seems to be language dependent
get-counter -listset * | Out-GridView
get-counter -listset "*Netzwerk*" | fl
get-counter -listset "*Netzwerk*" | % { $_.Counter }