Seven good quality 48x48 icons png format with transparency

Information for the business: ICON
Industry: Technology
Design details: Seven good quality 48x48 icons png format with transparency.

Must preserver the same style of the FastVersion already existent icons(DB1.png DB2.png and DB3.png).

1) LogIn icon: a vertical golden key .
2) Administration icon: barrel with lock (the lock must be as big as the barrell, to be visible) (don't use the figure it is just a just sample)
3)User icon (don't use the figure it is just a just sample)
4)Project icon : two gears and a user (don't use the figures they are just samples)
5)Save Project icon (a disquete with the icon of project)
6)Modify project icon (a pen with the icon of project)
7)Delete project icon (a red cros with the icon of project)

I uploaded. already existent FastVersion icons (The new icons must preserve the same style)
I uploaded some icons as example of something similar I would like login.png, projectExample.png , sysAdmin.png , user.png
Ideas for the visual style: preserver the same style of the FastVersion already existent icons.
Where the design will be used: open sorce app(QGis FastVersion Plugin)
Extra notes: