MacPAR deLuxe is intended to facilitate fixing and unpacking long lists of binary files downloaded from the Internet, mainly Usenet groups. Thus, the tool can recombine large files that had been previously split into PAR and PAR2 files to make them easier to download.
I am sure you will have no difficulty using this application as it has a very straightforward interface. In this respect, all you need to do is add the desired files and press the corresponding button. Luckily, it supports drag-and-drop operations as well as opening PAR files directly from Finder. Good news is that processing files in parallel windows is allowed, which saves you a lot of time. However, if you find that is a problem for your machine or interferes with other tasks, it is also possible to create a queue.
The verification process consists of checking the integrity of the downloaded files. Additionally, the tool can detect and recover missing data. Those files that the tool deems unrecoverable are flagged for you to take any additional action. Once the verification is successfully performed, the app can automatically decompress the files using its built-in capabilities. Still, it also lets you use a third-party tool if you so desire.
All in all, MacPAR deLuxe can help you preserve the integrity of downloaded data by verifying their completeness and repairing mixing parts. Thus, it comes in handy if you frequently download files from UseNet groups. Although it can recombine all the chunks into a single RAR file, it does not give you the option to create a series of equally-sized files. Fortunately, the product is freeware, donations are encouraged, though.