You are downloading the Multi Locker XAP file v18.104.22.168 for Windows Phone. Multi Locker is a paid and useful Utilities & Tools app: Multilocker is a special locker which have two options for you, you can have two lockers or just one depending on your option. You can have two ... You can now download the offline XAP file to install & try it.
Download Locations for Multi Locker 22.214.171.124 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 Multi Locker XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.