2 versions of a rock crashing a glass and 1 version of crashing glass with alpha channel and sound.
An example can be viewed in the preview video.
Glass Crash With Alpha
Alpha Channel: Yes, Looped Video: No, Frame Rate: 25, Resolution: 1920x1080, Video Encoding: Photo PNG + Alpha, File Size: 421mb, Number of Clips: 2, Total Clip(s) Length: 0:11