This is so far the smallest ADB Drivers I found in the Internet developed by Snoop05
1. Installs in less than 15 seconds.
2. Size of the file is 9 MB.
3. Also installs FastBoot along with ADB.
4. ADB and Fastboot will be installed to %SystemDrive%\adb directory, and system-wide path.
5. ADB commands will be available in any directory.
6. Automatically decides if install 32-bit or 64-bit drivers.
How to Install:
1. Run it (Require administrator privileges).
2. Follow instructions.
3. 15 seconds finished!