remove the prefix string in powershell

I am getting the users connected to Webservers count with this query

$wf = Get-Counter -ComputerName "WebServerName" -Counter "\web service(_total)\Current Connections"

I am getting the out put as..

webservername\\web service(_total)\current connections : 5

But i want to get out put only Webservername : 5

Please help us ..

Regards,

Phani