Do you want to copy some part (bytes) of a specific file? Free utility Part Copy can come handy in this regard to extract some specific part from any file.
Just enter the start position and offset length in decimal and hexadecimal values for selected file. Specify the destination file name and click Copy button to extract selected part of the file. This utility also support drag drop of file from explorer to application window. Ideal to extract sound or data from a location within a file.