You are downloading the DrumKit XAP file v220.127.116.11 for Windows Phone. DrumKit is a free and useful Music app: Drum Kit - a fully-ranged virtual drums for your Windows device. Join us on our official Facebook fan page: ... You can now download the offline XAP file to install & try it.
Download Locations for DrumKit 18.104.22.168 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline DrumKit XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.