You are downloading the Toolbox XAP file v220.127.116.11 for Windows Phone. Toolbox is a free and useful Productivity app: * Toolbox is free & quick way to access Windows Phone 8 system info and network settings, you can quickly view and change settings with * ... You can now download the offline XAP file to install & try it.
Download Locations for Toolbox 18.104.22.168 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Toolbox XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.