The boom_headshot.zip file you have requested: Skins / Miscellaneous / CS: Source: Headshot Flashlight Skin - 6.49kb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
Once you open the .zip folder, open wich spray you want (with text & without text) and extract the "materials" folder into the "ValveSteamSteamAppscounter-strike sourcecstrike" folder.Enjoy! Nicely done flashlight skin for CS: Source. Has a skin with and without the text.